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10 Worst Computer Viruses in history

Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

viruses10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent.
Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server.

Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation.
Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught.
Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging.
This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses.
As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last.
Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs.
The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter.
Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch.
The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries.
The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms.

Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage.
Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red.
Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic.
The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note.
The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million.
Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack.
Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million.
Other notable viruses

The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years:

Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove.

Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India.

Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably.

Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather.

Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries.

Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.”

Explorezip: This worm used fake emails to spread to every machine on thousands of local networks.

Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million.

Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs.

Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates.

Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.

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How to fix Error Code 52

Error Code 52 – What is it?

Error Code 52 is a device driver problem that users experience on any Windows 2000 operating system and later Windows systems.

The error occurs when the operating system prevents the peripheral device connected to the computer from functioning properly and is usually displayed by the following message:

“Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)”

Solution

driverfix boxError Causes

Error Code 52 is triggered by the following factors:

  • An incomplete program uninstallation
  • An incomplete program installation
  • Hardware is not removed properly
  • System recovery from viruses
  • An improper system shut down

Further Information and Manual Repair

Error Code 52 can pose severe risks to the overall health of your PC and any negligence in fixing it can be disastrous for your computer.

However, since the error code is like other device driver errors, resolving the error is relatively straightforward. Here are a few methods to resolve the error code.

Method 1 – Use System Restore

You can use system restore to roll back the system to a time when there was no error to eliminate the problem. Here is how you can use it:

  1. Log in using an Administrator account
  2. Click ‘Start’ button and select All Programs > Accessories > System Tools > System Restore
  3. Click ‘Restore my computer to an earlier time’ and click ‘Next’
  4. Select the last Windows restore point from the ‘On this list, click a restore point’ list, and click ‘Next’
  5. Click ‘Next’ on the confirmation window to proceed
  6. Restart your PC after restoration is complete

By restoring the system via a last saved system checkpoint, you can obtain undamaged Windows system registry files that can help avert the error code.

Method 2 – Run the Troubleshooting Wizard

If restarting your PC does not help, you will have to find the exact nature of the problem by running the troubleshooting wizard for the device and address the problem accordingly. To do this, proceed with the following steps:

  1. Run Device Manager on your PC
  2. Click on the program under the installed programs that are creating problems for you
  3. Click on the ‘General’ Tab
  4. Click ‘Troubleshoot’
  5. Upon opening, the Troubleshooting Wizard will ask a series of questions regarding the error. Answer the questions and follow its directions for solving the error code.

After following the directions of the Troubleshooting wizard, make sure to restart your PC for the changes to take effect. Then check if your device is still causing problems.

Method 3 – Manually uninstall and reinstall the device driver

Uninstalling and then reinstalling the device driver can help solve the error.

You can do this by firstly logging in as Administrator and open Device Manager. Select the device that is causing the problem and double click it and make sure that the peripheral is connected properly to the PC.

Upon opening, click on the ‘Driver’ tab and then select ‘Update Driver’. Make sure to refer to the system documentation that you received with your PC or computer to check for the motherboard details and driver specifics.

Method 4 – Use software to automatically download the driver

Manually uninstalling and reinstalling the driver will do the trick, however, it may be time-consuming especially when you would have to resort to your hardware user manual.

Therefore, using a program such as DriverFIX can save you a lot of time and frustration in having your device work properly on your computer.

DriverFIX, with its user-friendly approach to help you fix your PC issues, comes with an integrated database that detects which drivers you need to reconfigure within just a few seconds and downloads it automatically.

It further ensures that your drivers are installed in their entirety leaving no room for any incomplete files to remain that create Error Code 52.

It also has the added advantage of being able to backup and restores your files should there be the slightest possibility of system file damage. DriverFIX is the answer to fixing your PC error codes accurately and quickly.

Click here to download DriverFIX to fix Error Code 52 quickly and effectively!

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Fix Windows Setup Error code 0x80070006
Windows 10 setup is a bit complicated which is why it’s uncommon to encounter errors along the way. One of these errors you can encounter when running Windows Setup is the error code 0x80070006. If you are trying to fix this error, you’ve come to the right place as this post will guide you on how to do so. When you get the error code 0x80070006, you will see the following error message:
“Windows cannot install required files. Network problems may be preventing Windows from accessing the file. Make sure the computer is connected to the network and restart the installation. Error code: 0x80070006.”
As stated in the error message, this kind of error in Windows Setup is due to an unstable or unreliable network connection. Such problems can also be triggered by network hardware which includes the network adapters and the network routers. To fix this error, you need to check your internet connection and router or run the built-in network troubleshooter. You could also try using a different USB port or recreate a bootable USB drive as well as get a new Windows image file.

Option 1 – Try checking your internet connection and router

As mentioned, this Windows 10 setup error could be due to an unstable internet connection. To fix it, the first thing you have to do is to check the status of your internet connection and see if it is stable and has enough speed to run the setup. If it’s slow, then it’s no wonder that the setup process failed. To fix that, you can try to reboot your router from its admin panel or you can just turn it off manually and then turn it back on after a couple of seconds. In addition, you also have to check if it’s plugged in properly.

Option 2 – Try to run the Network Adapter troubleshooter

The next thing you can do is to run the Network Adapter troubleshooter. This built-in troubleshooter can help resolve any network issues. It can reset the adapters, remove cached settings, and many more. To run it, follow these steps:
  • Go to Settings > Update & security and from there select Troubleshoot.
  • Next, scroll down and select the “Network Adapter” option from the right pane.
  • Then click on the Run Troubleshooter” button.
  • After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 3 – Try to use a different USB port

You might want to check the integrity of the USB port where connected the device if you are using a bootable USB storage device to run the setup for Windows 10. All you have to do is switch the USB port or try to use another bootable USB device and see if it fixes the problem.

Option 4 – Try recreating the Windows 10 installation USB

Recreating the Windows 10 installation USB might help in fixing the problem. You can use a USB drive to do so but make sure that it has a great read-write speed. Follow the steps below to recreate Windows 10 installation USB”
  • Click this link and then click the Download Tool Now button.
  • Next, click the “Use the tool to create installation media (USB flash drive, DVD, or ISO file)…” option and follow the next given instructions on the screen.
  • Now select the ISO file option in step 5.
  • After that, you should now have an ISO file.
  • Next, go to the location where you’ve downloaded the ISO file.
  • Then right-click on the Windows 10 ISO file and select the Open with option and then select File Explorer.
  • Now click on “setup.exe” and follow the next instructions that appear on the screen. When asked, you have to select either Nothing (clean install) or Keep personal files only option. Take note that you must not select the “Keep personal files, apps, and Windows settings since it doesn’t really work.

Option 5 – Try getting a new Windows image file

If none of the four given options above worked, you might want to get a newer installation image using the Windows Media Creation tool. After that, create the bootable USB drive and once completed and then try to run the Windows 10 setup again.
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Fix Template_fields error in Microsoft Word
As you know, Microsoft Office Word is a program that’s widely used all over the web and it’s because it’s the best program there is when it comes to editing and processing words. However, even when it is the best there is, it is not without its faults and so on as it can still encounter some errors every now and then. One of these errors is the Template_fields errors. When you encounter such an error, you will see a pop-up window. This strange error randomly appears on documents but you need not worry as this post will provide you with possible solutions to resolve the problem. But before you proceed with these solutions, you have to create a backup for all your Word documents to Microsoft OneDrive preferably. To fix the problem, you can try to disable the add-ins or try to start Word in Safe Mode or repair Office. For more details, refer to the options given below.

Option 1 – Disable the Add-ins

Although add-ins enhance Microsoft Word, there are times when they can also cause problems that end up breaking Microsoft Word instead of improving it which is why you have to disable them. Refer to the following steps to do so:
  • Open Microsoft Word and then click on File.
  • After that, select Options from the menu and then click on Add-ins.
  • From there, you’ll see Manage: Com Add-ins as well as a button that says Go.
  • Now click on the Go button and wait for a couple of seconds for a new window to appear.
  • In the newly opened window, uncheck all the Add-ins and click on OK.
  • Restart Microsoft Word and check if the “Template_fields” error is now fixed or not.

Option 2 – Try starting Word in Safe Mode

You might also want to try rebooting Microsoft Office in Safe Mode as it is one of your best shots in finding out whether the problem is internal or external. However, if the problem does not appear after you reboot Microsoft Word in Safe Mode, then there is a possibility that the problem is with Microsoft Office itself. On the other hand, if the problem persists, then it could be a deeper issue.
  • First, start Microsoft Word in Safe Mode.
  • Next, tap and hold the Ctrl key on your keyboard and open the Word document.
  • After that, you should see a dialog box. Click on Yes and see if Microsoft Word opens in Safe Mode.
  • Alternatively, you can open the search box and then type “winword.exe /safe” and hit Enter.

Option 3 – Try repairing Microsoft Office

If the first two options didn’t work, then you might want to try repairing Microsoft Office without getting rid of it. In most cases, this usually works in fixing any problems and returns the program back to its default state. To repair Microsoft Office, follow the steps below.
  • Right-click on the Start Menu button and select Apps and Features.
  • Next, scroll until you see the Microsoft Office program you want to repair and then select the Modify option.
  • After that, follow the options to repair Microsoft Office and then restart your PC and see if the “Template_fields” error is no longer present.
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PUP - Driver Pro complete removal guide

Driver Pro Description

DriverPro is a program developed by PC Utilities Pro. This program is often found bundled in other installations.

From the author: PC Utilities Pro is a leading software development company founded in 2009. As a group of young enthusiastic programmers, we constantly strive in creating powerful, yet easy-to-use solutions that would enable even the most basic computer users to keep their PCs running like new.

When installed, DriverPro will add registry entries for the current user that allow it to run each time to computer is started. It will also add a scheduled task in Windows, that allows it to run at various times. The optimizing nature of the application allows it to access any file and information on your computer without your knowledge.

Multiple anti-virus programs have marked this application as a Potentially Unwanted Program, and it is not recommended to keep it on your computer.

About Potentially Unwanted Applications

Have you ever discovered an unwanted program running on your PC and wondered exactly how the heck it got there? A PUA / PUP (potentially unwanted application / potentially unwanted program) is a software program that comes bundled with freeware/shareware and you agree to install on your computer. These are programs you certainly don’t want on your computer since it doesn’t provide any useful service. Despite being regarded very dangerous, PUPs aren’t necessarily computer viruses or malware What makes a PUP different from malware is the fact that whenever you download one, you are doing it with your consent – though in most instances unwittingly and unwillingly. PUPs might not be malware but still, they’re harmful programs to your computer. At best, these unwanted applications provide hardly any benefit, and at worst, they could be quite damaging to your computer.

What do PUPs do on your computer, really?

Most Potentially Unwanted Programs will come in the form of adware, which typically aims to exhibit numerous irritating pop-up ads, banners, coupons, and bargains on websites you go to. PUPs that come as browser add-ons and toolbars are readily identifiable. They’ll track your online activities, redirect your search results to unsafe websites where spyware and adware can be downloaded, hijack your home page, and slow your internet browser down to a crawl. PUPs load up a dangerous bite if kept unchecked. They will often include things like information gathering program code which could gather and send your sensitive information back to 3rd parties. These are programs that don’t really do anything good for you; in addition to occupying space on the hard drive, they also slow down your PC, often alter settings without your authorization, the list of annoying features goes on and on.

Great tips on protecting yourself from unwanted software

• When setting up anything on your computer system, always study the fine print, like the license agreement. Don’t accept terms of use that are for bundled programs. • Only Use the “custom” or “manual” install method – and never blindly click Next, Next, Next. • Use an advert blocker/pop-up blocker; Install anti-malware products such as Safebytes Anti-malware. These software programs could establish a wall between the computer and cybercriminals. • Think twice before you decide to download any type of freeware or shareware. Just before adding a plug-in or web browser extension, think about whether it is really necessary. • Only download programs from the original providers’ websites. Avoid download portals because they use their very own download manager to pack extra programs along with the initial download.

Help! Malware Blocking Anti-virus Installation And Access To The Web

All malware is bad, but certain kinds of malicious software do a lot more damage to your computer than others. Some malware is meant to hinder or block things that you wish to do on your computer. It may well not allow you to download anything from the net or it will stop you from accessing some or all websites, particularly the anti-malware sites. So what you should do if malware prevents you from downloading or installing Safebytes Anti-Malware? Do as instructed below to get rid of the malware in alternate ways.

Get rid of malware in Safe Mode

The Windows operating system has a special mode known as “Safe Mode” where just the bare minimum required programs and services are loaded. In the event, the virus is set to load automatically when the PC starts, shifting to this mode may well prevent it from doing so. To start the computer into Safe Mode, press the “F8” key on the keyboard just before the Windows boot screen appears; Or right after normal Windows boot up, run MSConfig, check the Safe Boot under the Boot tab, and click Apply. After you restart into Safe Mode with Networking, you could download, install, and update the anti-malware program from there. Now, you are able to run the anti-virus scan to eliminate computer viruses and malware without any interference from another malicious application.

Switch to some other internet browser

Web-based viruses could be environment-specific, aiming for a particular internet browser or attacking particular versions of the browser. If you appear to have malware attached to Internet Explorer, then switch over to a different internet browser with built-in safety features, such as Firefox or Chrome, to download your favorite antivirus program – Safebytes.

Run anti-virus from your USB drive

Another way is to download and transfer an anti-malware program from a clean computer to run a scan on the affected system. Adopt these measures to run the anti-malware on the infected computer system. 1) On a clean computer, download and install Safebytes Anti-Malware. 2) Plug the pen drive into the uninfected computer. 3) Run the setup program by double-clicking the executable file of the downloaded application, which has a .exe file format. 4) Select the USB flash drive as the location when the wizard asks you where you intend to install the software. Follow the activation instructions. 5) Remove the flash drive. You may now utilize this portable antivirus on the infected computer. 6) Run the Safebytes Anti-malware directly from the flash drive by double-clicking the icon. 7) Press the “Scan” button to run a full system scan and remove viruses automatically.

Detect And Remove Viruses With SafeBytes Anti-Malware

Want to download the very best anti-malware software for your laptop or computer? There are many applications available that come in paid and free versions for Microsoft Windows computers. A few are worth your money, but many aren’t. You need to pick a company that creates industry-best antimalware and has earned a reputation as reliable. Among few good programs, SafeBytes Anti-Malware is the strongly recommended software for the security-conscious end user. Safebytes is one of the well-established PC solutions firms, which provide this complete anti-malware software program. This software program can easily detect, remove, and protect your computer from the most advanced malware intrusions such as adware, spyware, trojan horses, ransomware, parasites, worms, PUPs, along with other potentially harmful software applications. SafeBytes anti-malware offers a plethora of advanced features that set it apart from all others. The following are some of the good ones: Real-time Protection: SafeBytes provides complete and real-time security for your personal machine. It will regularly monitor your computer for hacker activity and also gives users superior firewall protection. Best AntiMalware Protection: This deep-cleaning anti-malware program goes much deeper than most antivirus tools to clean out your computer system. Its critically acclaimed virus engine finds and disables hard to remove malware that hides deep within your PC. Web Protection: SafeBytes gives an instant safety rating about the web pages you are about to check out, automatically blocking unsafe sites and ensuring that you are certain of your safety while browsing the world wide web. Fast Scan: SafeBytes Anti-Malware has a multi-thread scan algorithm that works up to 5x faster than any other antivirus software. Very Low CPU and RAM Usage: This software program is not “heavy” on your computer’s resources, so you’ll not notice any overall performance problems when SafeBytes is operating in the background. Fantastic Tech Support Team: You will get 24/7 technical assistance to promptly resolve any issue with your security application.

Technical Details and Manual Removal (Advanced Users)

To remove Driver Pro manually, navigate to the Add/Remove programs list in the Control Panel and choose the offending program you want to get rid of. For web browser plug-ins, go to your web browser’s Addon/Extension manager and select the add-on you want to remove or disable. You may also want to reset your web browser settings, as well as clear your web browser cache and cookies. Lastly, check your hard disk for all of the following and clean your registry manually to remove leftover application entries after uninstalls. Please note that only professional computer users should try to manually edit the system files mainly because removing any single vital registry entry leads to a major problem or even a computer crash. Also, certain malware is capable of replicating itself or preventing its removal. Carrying out this in Safe Mode is suggested.
Files: %Program Files%\Driver Pro\Driver Pro.exe %UserProfile%\Desktop\Driver Pro.lnk %UserProfile%\Start Menu\Driver Pro\Driver Pro.lnk %UserProfile%\Start Menu\Driver Pro\Help.lnk %UserProfile%\Start Menu\Driver Pro\Registration.Lnk Registry: HKEY_CURRENT_USER\Software376694984709702142491016734454 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run 13376694984709702142491016734454
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FromDocToPDF Step by Step Removal Guide

FromDocToPDF Toolbar is a browser extension published by Mindspark InteractiveNetwork, that usually comes bundled with other potentially unwanted programs. The toolbar is distributed heavily through advertising networks.

This toolbar automatically sets your default search engine to MyWebSearch, it also sets your new tab to the DocToPDF welcome page. This toolbar ads startup registration tasks that allow it to start automatically with Windows, it gathers website traffic, clicks, data, and personal information and sends it to its ad network. Multiple anti-virus programs have detected FromDocToPDF as a browser hijacker and therefore is potentially unwanted and recommended for optional removal

About Browser Hijackers

Browser hijacking is actually a form of unwanted software, commonly a web browser add-on or extension, which causes modifications in the web browser’s settings. Browser hijacker malware is developed for numerous reasons. Often, hijackers will force hits to internet sites of their preference either to increase traffic producing higher advertisement earnings, or to gain a commission for every user visiting there. While it might seem naive, these tools were created by vicious individuals who always attempt to take full advantage of you, so that they could make money from your naive and distraction. Furthermore, hijackers could make the whole infected system vulnerable – other dangerous malware and viruses will seize these opportunities to get into your computer system very easily.

Key signs that your web browser has been highjacked

There are several signs that could indicate a browser hijacking: home-page is changed; you see new unwanted favorites or bookmarks added, typically directed to ad-filled or porn websites; the default online search engine is changed and your browser security settings have been cut down without your knowledge; unwanted new toolbars are added to your browser; your browser will display constant pop-up ads; your web browser starts running slowly or exhibits frequent errors; You can’t access specific sites, in particular anti-malware websites.

Precisely how browser hijacker infects PCs

A browser hijacker could be installed on your PC when you visit an infected website, click on an email attachment, or download something from a file-sharing website. Many browser hijackings originate from add-on applications, i.e., browser helper objects (BHO), toolbars, or plug-ins added to browsers to give them additional functionality. A browser hijacker could also come bundled up with some free software that you unknowingly download and install, compromising your PC security. Typical examples of browser hijackers include CoolWebSearch, Conduit, OneWebSearch, Coupon Server, RocketTab, Delta Search, Searchult.com, and Snap.do. The presence of any browser hijacker on your system might significantly diminish the browsing experience, track your online activities that lead to serious privacy concerns, degrade overall system efficiency, and lead to software instability also.

Tips on how to get rid of browser hijackers

Certain browser hijacking could be simply stopped by discovering and eliminating the corresponding malware application through your control panel. However, most hijackers will be more difficult to locate or eliminate as they might get themselves connected with some important computer files that enable it to operate as a necessary operating system process. Novice computer users should never try for the manual form of removal, as it demands comprehensive system knowledge to carry out fixes on the system registry and HOSTS file.

How One Can Get rid of a Virus that is Blocking Websites or Preventing Downloads

Malware could cause all kinds of damage if they invade your computer, starting from stealing your private details to deleting data files on your computer. Some malware sits in between your computer and the internet connection and blocks a few or all websites that you would like to check out. It might also prevent you from installing anything on your PC, particularly anti-malware software. If you are reading this now, you may have perhaps recognized that virus infection is the reason behind your blocked net traffic. So what to do if you want to download and install anti-malware software like Safebytes? Although this kind of issue will be harder to circumvent, there are some actions you can take.

Download the antivirus in Safe Mode with Networking

If the malware is set to load at Windows startup, then booting in Safe Mode should prevent it. Since just the minimum programs and services start-up in “Safe Mode”, there are seldom any reasons for conflicts to take place. You will have to do the following to get rid of malware in Safe mode. 1) At power on/start-up, tap the F8 key in 1-second intervals. This should bring up the Advanced Boot Options menu. 2) Select Safe Mode with Networking using arrow keys and press Enter. 3) When you are into this mode, you should have access to the internet once again. Now, make use of your web browser normally and go to https://safebytes.com/products/anti-malware/ to download Safebytes Anti-Malware. 4) After the application is installed, allow the scan run to eliminate trojans and other threats automatically.

Switch to some other internet browser

Some malware only targets particular web browsers. If this is your situation, employ another internet browser as it might circumvent the malware. If you’re not able to download the antivirus software using Internet Explorer, this means the virus is targeting IE’s vulnerabilities. Here, you need to switch over to another web browser such as Chrome or Firefox to download Safebytes software.

Create a portable USB antivirus for removing viruses

Another solution is to create a portable anti-malware program on your USB stick. To run anti-malware using a flash drive, follow these simple steps: 1) Download Safebytes Anti-Malware or MS Windows Defender Offline onto a clean computer system. 2) Plug the USB drive into the uninfected computer. 3) Double-click on the downloaded file to open the installation wizard. 4) Choose a USB drive as the place when the wizard asks you exactly where you intend to install the application. Follow the instructions on the screen to finish off the installation process. 5) Transfer the flash drive from the uninfected computer to the infected computer. 6) Double click the Safebytes Anti-malware icon on the thumb drive to run the program. 7) Click on “Scan Now” to run a scan on the infected computer for viruses.

Ensure the Safety of Your PC by Installing SafeBytes Anti-Malware Software

If you are planning to purchase anti-malware for your laptop or computer, there are lots of brands and packages for you to consider. A few of them do a good job in getting rid of threats while some will harm your PC themselves. You should look for a product that has obtained a good reputation and detects not just computer viruses but other kinds of malware as well. One of the recommended software programs is SafeBytes Anti-Malware. SafeBytes carries a superb track record of top-quality service, and customers are very happy with it. SafeBytes is a powerful, real-time anti-malware application that is designed to assist the everyday computer end user in safeguarding their computer from malicious internet threats. With its cutting-edge technology, this software will let you remove multiples types of malware including viruses, trojans, PUPs, worms, ransomware, adware, and browser hijackers. SafeBytes anti-malware comes with a plethora of enhanced features that sets it apart from all others. Let’s take a look at a few of them below: Live Protection: SafeBytes gives real-time active supervision and protection from all known viruses and malware. It’ll constantly monitor your laptop or computer for hacker activity and also provides users with superior firewall protection. World-class AntiMalware Protection: Built upon a greatly acclaimed antivirus engine, this malware removal application can find and remove many obstinate malware threats like browser hijackers, PUPs, and ransomware that other common antivirus applications will miss. Quick Multithreaded Scanning: SafeBytes’s very fast malware scanning engine reduces scan times and extends battery life. At the same time, it’ll effectively identify and eliminate infected computer files or any online threat. Web Protection: Safebytes allots all sites a unique safety ranking that helps you to get an idea of whether the website you’re about to visit is safe to view or known to be a phishing site. Lightweight: SafeBytes is a lightweight and easy-of-use antivirus and antimalware solution. As it utilizes very low computer resources, this application leaves the computer power exactly where it belongs to: with you. 24/7 Live Expert Support: You can get 24/7 technical support to immediately resolve any issue with your security software.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove FromDocToPDF without the use of an automated tool, it may be possible to do so by removing the program from the Windows Add/Remove Programs menu, or in cases of browser extensions, going to the browsers AddOn/Extension manager and removing it. You will likely also want to reset your browser. To ensure the complete removal, manually check your hard drive and registry for all of the following and remove or reset the values accordingly. Please note that this is for advanced users only and may be difficult, with incorrect file removal causing additional PC errors. In addition, some malware is capable of replicating or preventing deletion. Doing this in Safe Mode is advised.

The following files, folders, and registry entries are created or modified by FromDocToPDF

Files: C:Users%USERAppDataLocalGoogleChromeUser DataDefaultLocal Storagehttp_fromdoctopdf.dl.tb.ask.com_0.localstorage C:Users%USERAppDataLocalGoogleChromeUser DataDefaultLocal Storagehttp_fromdoctopdf.dl.tb.ask.com_0.localstorage-journal C:Users%USERAppDataLocalGoogleChromeUser DataDefaultLocal Storagehttp_fromdoctopdf.dl.myway.com_0.localstorage C:Users%USERAppDataLocalGoogleChromeUser DataDefaultLocal Storagehttp_fromdoctopdf.dl.myway.com_0.localstorage-journal Registry: HKEY_CURRENT_USERSoftwareFromDocToPDF..Uninstaller HolidayPhotoEditTooltab Uninstall Internet Explorer
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Cartoonize review

Hello and welcome to our software series review. Weel this time we could say this is more of a service review since the application we are going through today is online and you can use it freely without ever needing to install it.

When we choose software that we are going to review and recommend we really try to recommend something that is worth your time and money, Cartoonize fits in both categories in my opinion.

First of all basic plan of this graphic software is completely free and as mentioned it is working online, also as one more feature basic plan does not even require you to have an account of any kind, all you need to do is go to the website of the application and you can start using it right away. There is also paid plan for extra features if you need them billed monthly or annually.

cartoonize application

Features

First things first, this is not Photoshop or GIMP and it does not aim nor want to be. This is something else, directed and pointed at the different types of users. This application is aimed at people that want to make some quick graphics and post them on social media and it does that very well. Even without knowledge to use graphic software this one is so well designed and straightforward that even a complete newcomer can do something right away.

So as the application that wants to be used by people that want to place some cool pictures or ads on their social media what it offers. For starters simplicity and ease of use, every option that you can use is on the left side of the screen nicely packed into the vertical toolbox. Inside the toolbox, you have access to various tools, effects, and filters that you can apply to your image.

Tools explained

Image manager

The first section on the tool panel is the image manager, here you can upload your images, delete them, search stock images, and so forth. nothing more to say about this one as it is only a basic file manager.

Edit

In this tool panel, there are a lot of basic settings for your image manipulations divided into 3 sections: Basics, Enhance, and Creative. In the basic section, you can crop, resize and rotate your image. Enhance panel will let you set exposure, color, vibrance, tint, and details (sharpen). Finally, the Creative part will let you remove the background with AI in a single click, replace colors in the image, and add a vignette and round image.

Effects

In the effects panel, you will be given 4 options to choose from Cartoonizer, Digital art, Sketcher, and painting. Each option once clicked will open another set of options tied to chosen preset where you will be able to choose a different style from chosen template. Once you click on the desired template it will be applied to your image and in the upright corner, you will have edit options to tweak it to your liking. You can play around as much as you want because only once you click on the apply button, the effect will be applied to your image.

Filters

Same as in the effects tool panel here you will also get a series of different filters that you can apply to your image. As in the previous tool once clicked on the chosen filter, you will be given options for its variations and details edits. How there is really plenty of filters options and combined with its own presets I will not focus on explaining what each one is doing since picture thumbnails are pretty accurate and just one look at them will explain to you everything you need to know.

Overlays

In the overlays panel, you can as the name says overlay different kinds of effects on your image. You can add snow, fog, sun flares rain, and many more. Presets work identically to previous effects and filters.

Masks

If you want to place your image in a certain shape or in-text this is the section for you. You will be presented with sections as custom text, shapes, brushes, floral, animals, and patterns. Each section will once again lead to plenty of variations on the chosen subject where you can pick one that you like the most and tweak its options.

Text

As the name suggests, this section is to add text to your picture or design. If you are making some cool ad for Facebook, Instagram, or other social media I believe that you will spend most of your time in this section adding text and tweaking it so it looks best. You have all the tools that you will need to make a catchy title or smaller block of text and you can add multiple texts to your picture tweaking their own visual appearance, the font used, color, and some effects like a drop shadow.

Draw

In the draw section, you will be able to freely draw whatever you like with your mouse or pen if you have one. you have basic options for a brush and eraser so you can erase stuff. Pretty basic tool but it gives a nice touch to underline something, circle it, etc.

Graphics

This panel will let you place various already made graphic assets into a picture. You have hearts, hats, glasses, etc. There really are tons of premade graphics along with thematic ones like new year, st. Patric day and more.

Frames

As the name suggests this section will place a frame of your choice around your picture. You can choose the style of frame, position, color, and many more. There are various styles and each style has its own options.

Conclusion

Cartoonize is a great online application that will let you quickly and easily do cool and nice image edits. As mentioned you can also add various effects, text, and graphics and use this app to make some quick and nice ads for social media. You have the option to publish to your social media right from the app in the save dialog but you can also of course download your image or design to your local computer.

Please note that for this review we used the pro, paid version so all of the features were unlocked. We wanted to give you a full overview of the full potential of the app. In my opinion, the small monthly fee that they charge is well worth it when you see all things that you can do with it.

Go to the cartoonize website and check it out, basic option is completely free and it does not even require making an account. Have fun, be creative and take care, I hope to see you again tomorrow.

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10 Worst Computer Viruses in history
Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

viruses10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent. Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server. Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation. Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught. Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging. This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses. As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last. Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs. The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter. Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch. The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries. The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms. Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage. Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red. Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic. The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note. The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million. Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack. Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million. Other notable viruses The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years: Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove. Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India. Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably. Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather. Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries. Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.” Explorezip: This worm used fake emails to spread to every machine on thousands of local networks. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs. Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.
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How to Fix Error Code 0x803f7001 in Windows

Error Code 0x803f7001 – What is it?

Error code 0x803f7001 results when users fail to update their Windows operating system. This often occurs when they seek to update from Windows 8 or 8.1 to Windows 10. Users will be able to identify error code 0x803f7001 because of the following common symptoms which occur:

  • Inability to upgrade your Windows operating system to Windows 10
  • Message box with error code 0x803f7001

Solution

Restoro box imageError Causes

The causes for error code 0x803f7001 are usually associated with the use of an unlicensed version of Windows 8 when upgrading to Windows 10. In such cases, the error code occurs when there is no valid Windows license or product key on your device.

Further Information and Manual Repair

To fix error code 0x803f7001, users may not necessarily need technical knowledge or the help of a Windows repair technician. Usually, the process is simple and can be resolved with the use of a valid product key. However, if users have trouble implementing the instructions found in the manual repair methods listed below, contact a Windows repair specialist for help or use an automated tool that provides the best solutions for problems like error code 0x803f7001.

Method One: Use a Valid Product Key

A product key is a 25-character code that enables users to activate their Windows operating system. To successfully activate your operating system and resolve error code 0x803f7001, enter the product key in the correct order. Once you have a valid product key in your possession, begin to resolve the error code by following the instructions below:

  • Step one: Click the Start button then select Settings
  • Step two: Select Update & security then Activation
  • Step three: Click the Change product key
  • Step four: Type in your valid product key. (Ensure you include the 25 characters of your product key in the correct order.)

Once you type in the valid product key, you should be able to successfully upgrade to the latest version of Windows. However, this method is only effective if the error code 0x803f7001 on your device is caused by issues related to the product key.

If the error code reappears after attempting manual repair method one, move to the next manual method suggested below.

Method Two: Reinstall Genuine Version of Windows 8

This method is crucial for you to perform if method one was not successful. Begin the reinstallation process by ensuring you have a genuine version of Windows 8. After reinstalling this version of your Windows operating system, attempt to upgrade to Windows 10 by following the instructions below:

  • Step one: Type Settings in the search box near the Start button or click the Start button and select Settings
  • Step two: After clicking Settings, select Update & Security
  • Step three: Select Windows Update then the Check for updates tab
  • Step four: Activate Windows 10 update

If this method is successful, you will no longer see error code 0x803f7001 pop up in a message box. You will also be able to access Windows 10, and all the benefits it provides users, on your device.

Method Three: Install an Automated Tool

Automated tools help PC users eliminate common issues such as Windows error codes. To address or rectify error codes like error code 0x803f7001 download a powerful automated tool on your machine. This tool enables users to access quick solutions. It also scans for and corrects issues that may result in error codes or poor PC performance.

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Fix ndis.sys failed BSOD error on Windows 10
NDIS or Network Driver Interface Specification is a programming interface for the network interface cards that aids in the proper functioning of a system driver in a computer network. The NDIS helps the computer system in order to communicate with other connected devices and hardware components on a computer network. In relation, the ndis.sys file is a critical system file developed by Microsoft for the Windows operating system. As you know, sys files or system files are important parts of the Windows operating system as well as a repository of system driver settings used by Windows to communicate with the connected hardware and devices. The ndis.sys files are stored mostly in a driver folder at C:/Windows/System32/drivers and as mentioned, these files are essential for the system to function properly. Although the presence of ndis.sys system file is not yet known to affect the normal functioning of the Windows OS, some of the Windows 10 users reported that they encountered ndis.sys blue screen errors on their PCs. Blue Screen of Death errors or Stop errors usually occurs when you open a program or a function. Moreover, it could also occur when the driver gets loaded during the system startup or during system shutdown. It isn’t yet clear what really causes the ndis.sys blue screen error. However, like other Stop errors, it may occur due to corrupted files, misconfigured device drivers, bad drivers, corrupted Windows Registry, missing or damaged system files, and malicious programs. Aside from the aforementioned reasons, the ndis.sys blue screen error might also occur if your hard disk is damaged and if the RAM is corrupted. In such cases, a lot of users usually disable the ndis.sys file. However, it won’t really resolve the issue since the file is required for the normal functioning of the operating system and even when you disable the file, it’s pretty useless as the file will start all over again. In addition, you might want to disable security programs or firewalls and antivirus programs in the meantime to check if these programs are the ones that are causing the error. And if you’ve determined that none of the security programs or firewalls and antivirus programs are to blame, refer to the options below that might help you resolve the DRIVER_IRQL_NOT_LESS_OR_EQUAL or ndis.sys Blue Screen of Death error.

Option 1 – Try to update or reinstall the PC device driver

The Ndis.sys Blue screen error can occur when the device driver in your computer is outdated or corrupted. Thus, you either have to update or reinstall it to fix the issue.
  • Tap the Win + R keys to launch Run.
  • Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
  • After that, a list of device drivers will be displayed. If you see a red or yellow sign that shows up against the driver, right-click on the driver’s name and select “Update Driver Software” or “Uninstall”. And if you find any “Unknown device”, you need to update it as well.
  • Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
  • Restart your PC.

Option 2 – Rollback your Network drivers

If you have updated the driver software as of late and you suddenly got this BSOD error, you might have to roll back the device driver – in other words, switch back to the previous working version. To do that, follow these steps:
  • Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
  • Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
  • Next, select the driver entries that are labeled appropriately other than anything in the context of the WAN Miniport.
  • Then select each one of them and double-click to open a new mini window.
  • After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of your Network adapters.
  • Now restart your computer to successfully apply the changes made.

Option 3 – Try running the System File Checker

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the ndis.sys Blue Screen of Death error. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.
  • Tap Win + R to launch Run.
  • Type in cmd in the field and tap Enter.
  • After opening Command Prompt, type in sfc /scannow and hit Enter.
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
  1. Windows Resource Protection did not find any integrity violations.
  2. Windows Resource Protection found corrupt files and successfully repaired them.
  3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Try running the CHKDSK utility

Running the CHKDSK utility might also help you resolve the Netwtw04.sys failed BSOD error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.
  • Open Command Prompt with admin privileges.
  • After opening Command Prompt, execute the following command and hit Enter:
chkdsk /f /r
  • Wait for the process to be completed and then restart your computer.

Option 5 – Run the DISM Tool

The DISM tool is another command-line tool in the Windows operating system that could help users fix various corrupted system files. To use it, follow these steps:
  • Open the Command Prompt as admin.
  • Then type in this command: DISM /Online /Cleanup-Image /RestoreHealth
  • The DISM command you entered will repair the corrupted system image. Do not close the window if the process takes a while as it will probably take a few minutes to finish.
  • Restart your PC.

Option 6 – Perform a System Restore

Performing a System Restore on your computer can also help you fix the ndis.sys Blue Screen of Death error. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.
  • Tap the Win + R keys to open the Run dialog box.
  • After that, type in “sysdm.cpl” in the field and tap Enter.
  • Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
  • After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.
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How to remove BIOS password
BIOS is software that is running in a chip located on your motherboard, you can enter BIOS usually by hitting DEL once the computer is turned ON but this sometimes varies and it depends solely on the motherboard manufacturer. Inside BIOS you can configure your computer components and set up some other important things including passwords for BIOS itself or for the entire system. Password itself is meant to protect access to BIOS from other non-technical users or to prevent access to the system from other people if for example computer is in one household and you would like to be the only one having access to it. However, passwords can be forgotten, and sometimes you can even purchase a second-hand computer with a password on it. In this guide, we will lead you through ways on how to remove your BIOS password so you can regain access to your BIOS settings.
  1. Use Manufacturers master password

    Most motherboard manufacturers have built-in a couple of master passwords for BIOS access. If your motherboard has one you can easily find it on the manufacturer's website. Use the master password and remove other passwords inside BIOS, save and exit.
  2. Remove CMOS battery

    If you could not find the manufacturer's master password or your motherboard model does not have one remove the CMOS battery to reset BIOS. Note that this method will reset the whole BIOS not only the password. Open on side of your computer casing and locate the round battery on it, do not worry, there is only one battery so you can not make mistake. Remove the battery and leave it outside for around 20 to 30 minutes then place it back as it was, CMOS is reset now and you can access BIOS.
  3. Reset BIOS via jumper

    If you want to remove only the password and do not touch other BIOS setting you can locate the BIOS password reset jumper. How the location of this jumper and position is different from the motherboard to motherboard we can not cover them all here and it is advisable to read the manual or find information on the official manufacturer's website.
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