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How to Fix PFN_LIST_CORRUPT Error on Windows

If you suddenly encounter PFN_LIST_CORRUPT Blue Screen of Death error while using your computer then it means that the Page Frame Number or PFN list is corrupted. Page Frame Number is an indexing number used by the hard drive to find out the location of every single file on the physical disk. This kind of Blue Screen error is usually caused by a driver that’s passing a bad memory descriptor list and it can either be temporary or permanent. And so to fix this particular BSOD error, read on as this post contains a couple of suggestions that could help.

Keep in mind that when you get a Blue Screen error like PFN_LIST_CORRUPT, the power connection to your PC must not be interrupted and so if you are using a laptop, it’s best if you connect it to a power source. On the other hand, if creating a dump from 0% to 100% takes up more than 5-10 minutes, then you have to force shut down your computer by pressing and holding the Power Key for 10 seconds or at least until the CPU lights turn off. After you do that, proceed to the troubleshooting tips prepared below.

Option 1 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like PFN_LIST_CORRUPT. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

  • Tap the Win + I keys to open the Settings panel.
  • Then go to Update & Security > Troubleshoot.
  • From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 2 – Run a System File Checker scan

You can also try to run a System File Checker or SFC scan in order to scan your computer for corrupted files that might be the cause behind the PFN_LIST_CORRUPT error. Once it finds any corrupted system files, it will automatically fix them. To run System File Checker, here’s what you have to do:

  • Tap Win + R to launch Run.
  • Type in cmd in the field and tap Enter.
  • After opening Command Prompt, type in sfc /scannow

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.
  • Restart your computer after the scan is completed.

Option 3 – Check for any hard disk errors

  • On your desktop, right-click on the “This PC” or computer icon and then select Manage to open the Disk Management. Here you get to check your drive’s health.
  • Next, click on Disk Management on the left side panel.
  • From there, check the state of your drives. If it shows that all your partitions are healthy then it means all is good and that the problem may have something to do with some physical issues with your hard drive.

You might also want to run the CHKDSK utility to help you fix any issues with your hard disk. 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 4 – Update the Device drivers

Updating the Device drivers can also help you fix the PFN_LIST_CORRUPT Blue Screen error. To do so, follow the steps below.

  • 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 and select “Update Driver Software”.
  • Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
  • Restart your PC and then check if the Blue Screen error is now fixed or not.

Option 5 – Disable OneDrive

The PFN_LIST_CORRUPT error might also be caused by OneDrive. Thus, you have to try disabling this program to resolve the problem.

  • Tap the Ctrl + Shift + Esc keys to open the Task Manager.
  • Once the Task Manager is open, click on More Details located at the bottom left portion of the window.
  • Then go to the Startup tab and select Microsoft OneDrive and then click Disable.

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Removing Linkey From Windows Tutorial

Linkey is a potentially unwanted web browser search extension for the top browsers, designed to modify the user’s search and home pages in order to direct advertising. This extension changes your default search provider, redirects new tabs, and distributes information & statistics to the server. This extension will display unwanted ads, redirect you through unwanted search engines, and send your browsing information (potentially private information) back to its ad network.

From the publisher: Linkey is compatible with all the latest versions of Internet Explorer, Chrome, and Firefox. Linkey is a simple browser extension that allows you to get the best sites in one click in visualized & friendly interface.

About Browser Hijackers

Browser hijacking is actually a type of unwanted software, often a browser add-on or extension, which causes modifications in the browser’s settings. Browser hijackers could do many different things on your PC. Usually, hijackers will force hits to websites of their preference either to increase traffic producing higher advertisement revenue, or to obtain a commission for each and every user visiting there. Nonetheless, it’s not that harmless. Your online safety is compromised and it is also extremely annoying. Browser hijackers could also allow other malicious programs without your knowledge to further damage your computer.

How to know whether the web browser is hijacked?

The typical symptoms that suggest having this malicious software on your PC are: 1. your homepage has been reset to some unfamiliar site 2. your browser is constantly being redirected to adult sites 3. the essential web browser settings are modified and undesirable or insecure resources are put into the trusted sites listing 4. unsolicited new toolbars are added to your browser 5. you may notice endless pop-up ads on your screen 6. your web browser starts running sluggishly or exhibits frequent errors 7. You simply can’t access particular sites, particularly anti-malware websites.

How it infects your computer

Browser hijackers attack computers through malicious e-mail attachments, downloaded infected computer files, or by checking out infected internet sites. They could be included with toolbars, BHO, add-ons, plug-ins, or browser extensions. Also, certain freeware and shareware can put the hijacker in your PC through the “bundling” technique. Examples of well-known browser hijackers are Fireball, GoSave, Ask Toolbar, CoolWebSearch, Babylon Toolbar, and RocketTab. Browser hijackers could interrupt the user’s browsing experience severely, keep track of the websites visited by users and steal financial information, cause problems in connecting to the internet, and ultimately create stability issues, making applications and computers crash.

How you can get rid of a browser hijacker

Some hijackers can be simply removed by deleting the free software they came with or by removing any extension you have recently added to your computer. Unluckily, the majority of the software products used to hijack a browser are deliberately built to be difficult to eliminate or detect. Moreover, manual removals demand in-depth system knowledge and therefore can be an extremely difficult job for novices.

What To Do When You Cannot Download Safebytes Anti-Malware?

All malware is bad and the magnitude of the damage may vary greatly in accordance with the type of infection. Certain malware variants modify internet browser settings by including a proxy server or modify the computer’s DNS configurations. When this happens, you will be unable to visit some or all of the websites, and therefore unable to download or install the necessary security software to remove the malware. If you’re reading this, you may have infected by a virus that prevents you from downloading computer security software like Safebytes Anti-Malware. There are a few options you can attempt to get around with this obstacle.

Install in Safe Mode

The Windows-based PC has a special mode called “Safe Mode” in which just the bare minimum required programs and services are loaded. If the malware is blocking internet access and affecting your PC, running it in Safe Mode will let you download antivirus and run a diagnostic scan while limiting potential damage. In order to get into Safe Mode or Safe Mode with Networking, press F8 while the system is starting up or run MSConfig and look for the “Safe Boot” options under the “Boot” tab. After you restart into Safe Mode with Networking, you could download, install, as well as update anti-malware software from there. After installation, run the malware scanner to remove most standard infections.

Use an alternate browser to download an antivirus application

Certain viruses might target vulnerabilities of a specific web browser that obstruct the downloading process. If you appear to have a virus attached to Internet Explorer, then switch over to an alternate internet browser with built-in safety features, such as Chrome or Firefox, to download your favorite antivirus program – Safebytes.

Install security software on a thumb drive

Here’s another solution which is creating a portable USB anti-malware software that can check your system for malicious software without needing installation. Do these simple actions to clean up your affected PC using portable anti-malware. 1) Download the anti-malware program on a virus-free computer. 2) Plug the Flash drive into the clean computer. 3) Double-click on the downloaded file to open the installation wizard. 4) Choose the USB flash drive as the destination for saving the software file. Follow the on-screen instructions to finish the installation. 5) Unplug the USB drive. You may now utilize this portable anti-malware on the infected computer system. 6) Double click the Safebytes Anti-malware icon on the flash drive to run the software. 7) Click on “Scan Now” to run a complete scan on the infected computer for malware.

A Look at the Best AntiMalware Program

Want to download the very best anti-malware software for your laptop? There are several applications in the market that come in paid and free versions for Microsoft Windows systems. Some of them are excellent, some are ok types, while some will destroy your PC themselves! When searching for an anti-malware tool, choose one which provides dependable, efficient, and complete protection against all known computer viruses and malware. On the list of highly recommended software programs is SafeBytes AntiMalware. SafeBytes carries a good track record of top-quality service, and customers are very happy with it. Safebytes is one of the well-established computer solutions companies, which offer this all-inclusive anti-malware software. Using its cutting-edge technology, this application will allow you to eradicate multiples types of malware such as computer viruses, trojans, PUPs, worms, ransomware, adware, and browser hijackers. SafeBytes has got a variety of wonderful features that can help you protect your PC from malware attacks and damage. Below are some typical features present in this tool: Live Protection: SafeBytes offers a totally hands-free active protection that is set to observe, prevent and remove all threats at its very first encounter. This utility will always monitor your computer for any suspicious activity and updates itself regularly to keep current with the newest threats. Most Reliable AntiMalware Protection: This deep-cleaning anti-malware software program goes much deeper than most antivirus tools to clean your computer system. Its critically acclaimed virus engine finds and disables hard-to-remove malware that conceals deep inside your PC. Internet Security: Through its unique safety rating, SafeBytes notifies you whether a site is safe or not to access it. This will make sure that you’re always certain of your safety when browsing the net. Lightweight Utility: The program is lightweight and can run silently in the background, and that does not have an effect on your PC efficiency. 24/7 Live Professional Support: SafeBytes provides 24/7 technical support, automatic maintenance, and upgrades for the best user experience.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove Linkey 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 Linkey

Files: C:Users%USER%AppDataLocalTempis33084504mysearchdial.dll C:Users%USER$AppDataLocalTempis357113909833170_stpsetup.exe c:Users%USER$AppDataLocalTempMega Browsemegabrowse_setup.exe C:Program Files (x86)Linkeylog.log C:Program Files (x86)LinkeyHelper.dll C:Program Files (x86)LinkeyChromeExtensionChromeExtension.crx C:Program Files (x86)Linkey C:Program Files (x86)LinkeyChromeExtension C:Program Files (x86)LinkeyIEExtension C:Users%USER$AppDataRoamingDigitalSitesUpdateProc Registry: HKLMSOFTWARECLASSESAPPID6A7CD9EC-D8BD-4340-BCD0-77C09A282921 HKLMSOFTWAREWOW6432NODECLASSESAPPID6A7CD9EC-D8BD-4340-BCD0-77C09A282921 HKLMSOFTWARECLASSESCLSID181F2C09-56DD-4F98-86D7-59BA2BC59B5A HKLMSOFTWARECLASSESCLSID4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47 HKLMSOFTWAREMICROSOFTWINDOWSCURRENTVERSIONEXPLORERBROWSER HELPER OBJECTS HKLMSOFTWARELINKEY HKLMSOFTWAREWOW6432NODELINKEY HKLMSOFTWAREWOW6432NODESYSTEMKGeneral HKUS-1-5-18-ED1FC765-E35E-4C3D-BF15-2C2B11260CE4-0SOFTWARECONDUITValueApps HKLMSOFTWAREWOW6432NODEMICROSOFTWINDOWSCURRENTVERSIONEXPLORERBROWSER HELPER OBJECTSEF5625A3-37AB-4BDB-9875-2A3D91CD0DFD HKLMSOFTWARELINKEY|ie_jsurl, http://app.linkeyproject.com/popup/IE/background.js HKLMSOFTWAREWOW6432NODELINKEY|ie_jsurl, http://app.linkeyproject.com/popup/IE/background.js
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A slow PC startup can be pretty annoying. This usually results from various computer issues. If your computer is acting sluggishly, here are four ways to speed up your PC startup.

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Turn On or Off the Recommended Troubleshooting
For a while now, Microsoft has been working hard to add various built-in troubleshooters in Windows 10. In fact, there is a troubleshooter for almost every standard or common error in Windows 10. And now with the newly released Windows 10 v1903, Microsoft has added the Recommended Troubleshooting which allows Windows 10 to automatically fix a lot of critical issues on your computer, and in this post, you will be guided on how you can turn on or off the Recommended Troubleshooting in Windows 10. The Microsoft Diagnostic & Feedback data only provides two settings – Basic and Full. So if you want to turn off the Recommended Troubleshooting for some reason, the only way to do so is to stop it from collecting complete data from your PC. And to turn it on or off, you can choose to switch between them. To do that, navigate to Settings > Privacy > Diagnostics & feedback and from there, select Basic under the Diagnostic Data section. After that, go back to Settings and go to Update & security > Troubleshoot. Once you’re there, you should see a warning message saying, “Share Full Diagnostic data to get additional troubleshooting recommendations”. Based on the message, Microsoft will only offer the recommended troubleshooting based on the Full Diagnostic data which it collects from your computer. On the other hand, if you know how to navigate and use the Windows Registry, then you can enable or disable the Recommended Troubleshooting via Registry Editor but before you proceed, make sure that you create a System Restore point. Once that’s covered, follow these steps:
  • Tap the Win + R keys to open the Run dialog box and type “regedit” in the field and tap Enter to open the Registry Editor.
  • Next, navigate to this registry path: HKEY_LOCAL_MACHINESOFTWAREMicrosoft
  • From there, look for the key named “WindowsMigration”. If you can’t find it, just right-click on the left pane and create a new key and then name it “WindowsMigration”.
  • After that, create a DWORD “UserPreference” and double click on it to set its value to “0” if you want to turn it off or “1” if you want to turn it on.
  • Exit the Registry Editor and restart your computer to apply the changes made.
Note: The Recommended Troubleshooting functionality can look into the error logs sent back to the Microsoft team and use an algorithm to set up a solution for you and they’re nothing but Diagnostics and Feedback data that Windows collects and sends back to Microsoft. Moreover, the recommendations are only visible if you are connected to the internet, else it will show the same message.
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Scroll bar in Chrome is missing in Windows
If you find that the scroll bar in your Google Chrome browser is missing all of a sudden, and it becomes difficult for you to scroll down the web page and see its content, worry not for this post will guide you on what you can do to resolve this problem. Usually, when the mouse cursor stays hidden in the corner and only appears when you point it to the edge of the screen. However, there are instances when it won’t appear which makes navigating the web page you are visiting quite impossible. So if you encounter this kind of strange behavior on your Google Chrome browser, there are several suggestions you can check out to resolve it. In most cases, updating the browser resolves the problem, but if it does not, you can try restoring the browser’s settings to their default state by resetting Chrome or you could also disable hardware acceleration or disable the overlay scrollbars flag. For more information, follow each one of the options provided below.

Option 1 – Reset Google Chrome

Before you proceed, make sure that the Chrome browser is not running anywhere in the background via Task Manager. Once you’ve made sure that it’s no longer running, refer to these steps:
  • Tap the Win + R keys to open the Run dialog box.
  • Then type “%USERPROFILE%AppDataLocalGoogleChromeUser Data” in the field and tap Enter to open this location.
  • From there, look for the Default folder and then tap the Shift + Delete button and if a confirmation prompt appears, click on Yes.
  • After deleting the Default folder, open Google Chrome and click on the three vertical dots icon located in the top-right corner to open the menu.
  • Next, click on Settings and scroll down and then click on Advanced to open the Advanced Settings.
  • Then scroll down until you see the “Reset and clean up” section and click the “Restore Settings to their original defaults” option.
  • After that, you will see a confirmation box and from there, click on the Reset settings button to reset your Google Chrome browser.

Option 2 – Try to disable the Hardware Acceleration

For better performance, Google Chrome uses the Hardware Acceleration by default. Unfortunately, there are just some cases when your hardware, GPU to be specific, might not be able to cope with the requirements, resulting in the black screen issue. And if this is your case, you should try to disable the hardware acceleration from your Google Chrome browser settings panel. To do so, follow the steps below.
  • Open the Google Chrome settings page.
  • Click on the Advanced button to get more options.
  • Look for the option called “Use hardware acceleration when available” and then disable it by toggling the button to the left.
  • After that, check if the screen flickering issue in Chrome is fixed.

Option 3 – Try to disable “Smooth Scrolling” in Chrome

Disabling “Smooth Scrolling” in Chrome might also help you fix the issue. To do so, follow these steps:
  • Open Chrome and type “chrome://flags” and hit Enter.
  • Next, look for a flag named “Smooth Scrolling”. You can scroll down until you find it or search it in the Search Flag bar. Note that Smooth Scrolling is enabled by default in the newer versions of Chrome.
  • After that, select the drop-down menu and select Disabled.
  • Then click on the “Relaunch Now” button.
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Software review series:CodeTwo QR Code Desktop

What is a QR Code

QR code or if you want to be more technical Quick Response code is a two-dimensional code made of square dots creating a pattern that can be scanned via QR scanner and then interpreted. Usually, they are present on product packaging, on business cards, websites, etc. When you decode a QR code you can get a link to a website or link to a file or whatever, you can get text, image, email, contact information, etc.

QR Code Desktop Reader & Generator sample code

How to decode a QR Code? You can scan it with your mobile devices like iPhone, iPad, Android or Blackberry equipped with additional software for scanning QR Codes. You might want to check out tools like Barcode Scanner or Red Laser. If you don’t have a mobile device or you need to scan a barcode on your PC, simply use CodeTwo QR Code Desktop Reader & Generator.

How this program works

QR Code reading

CodeTwo QR Code Desktop Reader & Generator is a free tool that will let you quickly scan any QR Code from your screen – be it a part of the website, email, banner, or document. Simply run the program and hit From the screen on the top menu. Your standard mouse cursor will change into a cross to help you make a selection on your screen. Simply select an area with a QR Code and the program will automatically scan it. You can scan QR codes from websites, documents, movie files – you name it. You can also select an image file that contains a QR Code and the program will locate it automatically and decode it. To do that, simply click From file on the top menu of the program and select the desired image from your hard drive. If you have a file copied to your clipboard, or if you make a screenshot of a QR Code, QR Code Desktop Reader & Generator will let you decode those QR codes in one click. Just click From clipboard and the program will automatically locate and decode the QR code for you. That is not all, you can also use your camera to scan QR codes. If you have more than one camera, the program will let you choose which one to use. To use this option, simply click From webcam, and you will be able to scan QR codes with your recording device.

QR Code generation

  • CodeTwo QR Code Desktop Reader & Generator also acts as a QR code generator. Creating QR codes is as easy as reading them. Here is how to generate a QR code:
  • In the top menu, click Generate mode on and enter the text you want to translate into QR Code
  • Choose if you want to copy it to the clipboard or save it in a file. The QR Code will be scaled automatically, but you can resize it in the Size settings tab.
  • The resulting QR code can be used however you like. To name just a few options, you can:
  • Upload it to your blog/website which is especially useful for mobile users.
  • Print it on a poster, providing easily accessible links with more information on your event.
  • Send it in newsletters, or include it in your email signature.

QR Codes in email signatures

Inserting QR codes in email signatures lets mobile users quickly grab your contact details, or provides them with links so that they can get more information on your company or topic you were discussing. You can also provide your recipients with a link to QR Code Desktop Reader & Generator. This will help them easily decode QR codes when they open your email on a PC.

QR code

If you want to include a QR code automatically in email signatures throughout a whole organization, try CodeTwo central email signature management solution. It is a very useful tool, which enables you to unify email signatures on Exchange Server and Office 365 (Microsoft 365).
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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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An Easy Guide to Fixing Error 115

Error 115 - What is it?

Error 115 is a type of GameGuard redundant execution error.  If you have GameGuard installed on your PC, then you will most likely experience this error code. GameGuard is basically an anti-cheating robot toolkit developed by INCA Internet. It is installed to block possibly malicious applications and common methods of cheating on multiplayer online role-playing games. But at the same time, this software is infamous for error pop-ups. Error 115 is displayed on the Windows screen when a game has been executed multiple times or you have left the game running without logging out. Error 115 is displayed in the following format:
GameGuard Execute Error: 115 ‘There are multiple events of game execution or GameGuard is already running. Close the game then try again.’

Solution

Restoro box imageError Causes

The error 115 may appear on your Windows screen due to multiple reasons. These include:
  • Multiple executions of the game
  • Antivirus Conflict
  • Firewall Conflict
  • Registry Overloaded with Bad and Invalid Entries
This error may cause a great deal of inconvenience to you if you love to play multi-player role-playing games over the web like Blood Feud, 9Dragons, Phantasy Star Universe, and Alliance of Valiant Arms. To avoid such inconvenience, it is advisable to fix this error immediately.

Further Information and Manual Repair

Here are some easy do-it-yourself methods to resolve the error 115 on your PC. These methods require no technical expertise.

Method 1 - Terminate the Game Already Running on Your System

To resolve the issue, hit ‘Ctrl+Shift+Esc’ to launch Task Manager. Here you will find a list of applications running on your system, terminate the gaming application to resolve error 115.  If this doesn’t work, then restart your PC.

Method 2 - Disable Antivirus Programs or Firewall Temporarily

Sometimes this error may appear on your computer screen because of antivirus or Firewall security conflict. These programs often block gaming applications and software like GameGuard and because of that, you are unable to play online games on your system. To fix the issue, try disabling these programs on your PC temporarily.

Method 3 - Clean and Repair the Registry

The error 115 may also occur because of the registry issue with Symantec. Follow these steps to enable the game to run:
  • Go to your start menu then find Run then write Regedit.
  • Find HKEY_LOCAL_MACHINE. To proceed, go to SYSTEM then CurrentControlSet, and then Services.
  • Look in the list for SysPlant and click it. Then look for the word 'Start', right-click on Start, and select rename.
  • Rename 'start' to 'DWORD: 00000004’ then close Regedit and reboot your PC to activate changes.

Method 4 - Download and Run Total System Care.

This process can be slightly tricky and a bit time-consuming. Therefore it is advisable to download Restoro. This is a cutting-edge, easy-to-use PC Fixer deployed with a powerful registry cleaner. It removes all the unnecessary files cluttering the registry like bad and invalid registry entries. It fixes the damaged registry and enables it to resume back to its normal functioning. Click here to download Restoro.
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How to Fix Tcpip.sys Blue Screen Error in Windows 10
If you have received a BSOD error message that says, “Tcpip.sys”, read on as this post will show you how you can fix the problem. The “Tcpip.sys” means Transmission Control Protocol over Internet Protocol. It is a library of a set of rules that are used to interconnect different devices all over the internet. The Tcpip.sys file is a driver and if a BSOD error message includes this one, it could only mean that the driver file is corrupted or incompatible with your system or there are some conflicting programs installed in your computer. To fix this error, you can try the following workarounds. Make sure to carefully follow each one of them.

Option 1 – Check for conflicting or incompatible programs by putting your PC in a Clean Boot state

As mentioned, the “tcpip.sys” BSOD error might be caused by some problematic programs that clash with your existing operating system. Several users reported that numerous programs that are supposedly designed to enhance computer performance are causing conflict in the system instead. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.
  • Log onto your PC as an administrator.
  • Type in MSConfig in the Start Search to open the System Configuration utility.
  • From there, go to the General tab and click “Selective startup”.
  • Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
  • Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
  • Click Disable all.
  • Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
After putting your PC in a Clean Boot State, try creating a system restore point and see if the problem still occurs. Clean Boot troubleshooting is designed to help you isolate the problem. For you to execute a clean boot troubleshooting, you must do a couple of actions (the steps are given above) and then restart your PC after every action. You might have to disable one third-party app after the other to really isolate the issue. And once you’ve narrowed down the problem, you can either disable the third-party app that’s causing the problem or remove it. Note that you must switch your PC back into the Normal Startup mode after you’re done troubleshooting the problem. Here’s how you can do it:
  • From the “Start” menu, go to System Configuration.
  • After that, switch to the General tab and click the option for “Normal Startup”.
  • Next, go to the Services tab and clear the checkbox for “Hide all Microsoft services”.
  • Then find and click “Enable all” and if prompted, you have to confirm.
  • Afterward, go to the Task Manager and enable all the Startup programs and confirm the action.
  • Restart your PC when prompted.

Option 2 – Disabling Antivirus Software

There are cases when the “tcpip.sys” BSOD error is caused by the antivirus program installed in your computer that’s blocking some essential operations. Because of this, the operating system fails which throws up the BSOD error. As you know, the antivirus program is designed to protect the computer and monitor every action in the system. However, there are instances when the antivirus program gives false positives and shuts down some modules even if it’s harmless. So this could be the case for the “tcpip.sys” error. To verify if the problem is indeed caused by the antivirus program in your computer, you need to temporarily disable it. After you’ve disabled it, restart your PC and then check if the problem’s fixed or not.

Option 3 – Try to update all your Drivers

From time to time, drivers get corrupted or outdated so it’s no surprise that they conflict with the operating system and cause errors like the “tcpip.sys” BSOD error. To fix the problem, you need to update all your drivers especially the network driver since the “tcpip.sys” error is closely related to this driver. Follow the steps below to update your drivers.
  • 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.
Note: You also have the option to go directly to the website of your graphics card manufacturer and check if there’s a new update – if there is, download it. After that, you could also check if there’s a new update of the game you’re getting the issue of the black bar.
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How to Fix Error Code 0x8007041d on Your PC

Error Code 0x8007041d - What is It?

Error Code 0x8007041d is an error that arises during the Windows 10 Update process. In some cases, this error code can also arise during the Windows 10 Activation process. It is an error code that has been present in multiple versions of the software but usually arises when antivirus or registry issues interfere with the Windows Update or Activation software.

Common symptoms include:

  • Inability to download the needed Windows 10 updates
  • Inability to complete the Windows 10 Update process

If you are experiencing the Error Code 0x8007041d on your machine, there are several methods that you can use to attempt to resolve the problem. Several of the steps that are most successful for the resolution of this error require familiarity with registry and antivirus tools, so if you are unsure of your ability to complete these steps on your own, contact a qualified computer repair technician to assist you.

Solution

Restoro box imageError Causes

In most cases, Error Code 0x8007041d arises when there is a conflict between multiple antivirus or malware tools on the computer, if there is an issue in the Windows registry, or if your Windows Defender software is out of date. During the Windows Update process, the system checks to ensure that there are not any factors that are present that could introduce viruses to the system, so if there are any indicators that could present issues to the software, Error Code 0x8007041d will often arise.

Further Information and Manual Repair

For users who experience Error Code 0x8007041d, there are several steps that can be taken to resolve the issue. If the following methods are not successful for you or if you are unsure of your ability to undertake them on your own, contact a qualified Windows 10 computer technician.

Here are the best ways to attempt to fix Error Code 0x8007041d on your computer:

Method 1:  Remove Additional Security Software Apart from Windows Defender

In some cases, having multiple versions of malware or antivirus software installed on your computer can cause the Windows system to create conflicts between them, which can interfere with your ability to update. During the update process, the system may attempt to determine if there is any malware present, and having multiple kinds of antivirus software present on the same machine may return mixed results.

If you currently are running antivirus software that is separate from Windows Defender, consider removing it from your computer prior to running the update software. This may allow you to successfully complete your update process without conflict. Additional software can be reinstalled after the update is complete, but make sure to keep both sets of software up to date in order to lessen the chances of encountering this error code again during future updates.

Method 2:  Update Your Windows Defender Software

If you currently have Windows Defender as your primary antivirus software, check to see whether it is fully up to date. Out of date antivirus software can cause conflicts with the Windows Update process since the update to Windows 10 will not be able to be completed unless the system is free from viruses or malware.

If you are unsure of whether or not your Windows Defender is up to date, open it and run the process to check for updates, then re-attempt to run Windows Update. In some cases, you may want to restart your computer before running the Windows 10 Update process a second time.

Method 3:  Run the Registry Repair Tool

Another issue that could cause Error Code 0x8007041d is a problem in the system registry. If you believe that this may be the case, run the Windows Registry Repair Tool on your machine to check for and resolve any issues. This is a fairly simple and straightforward tool to use, but it can help you to resolve any number of problems that may interfere with your ability to update your Windows 10 software.

If you have taken the steps listed above, restart your computer before attempting to proceed with the Windows Update process. If the three methods listed above are not successful in completely resolving Error Code 0x8007041d on your machine or if you are not comfortable in your ability to implement these steps on your own, contact a qualified Windows repair technician who is familiar with the Windows Update process to assist you.

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

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Impacts & consequences Of Ransomware
From the various report, it is now clear that no one is prone to Ransomware attacks. Cyber-criminals never target any specific field of the user workgroup for this Ransomware attack. But in past few years, it has hugely affected home users, businesses, organizations. We can say, Ransomware victims come in all shapes & sizes. Many business owners think that they will never be attacked by Ransomware crooks because their business is not so big. But that’s not true. A huge proportion of Ransomware attacks happened in small sector businesses because of their weak security resistances.

Some leading negative consequences of Ransomware attacks faced by almost every victim are:

  1. Permanent or temporary loss of proprietary or sensitive information.
  2. Lots of trouble in performing regular operations.
  3. Huge financial losses sustain for restoring up your files and systems.
  4. Latent harm to the reputation of an organization.
  5. Even making the Ransom payment doesn’t guarantee the safe releasing of your encrypted files.
  6. Attackers get the victim’s money along with their banking details.
  7. Getting the decrypting files doesn’t mean malware infection has completely been removed.
Ransomware put a tremendous impact on disturbing business operations and in the end, leads to data loss situations.

Here are some huge impacts of Ransomware attacks on business are:

  1. Damage or loss of all the crucial information
  2. In the Ransomware post-attack period Business disrupts a lot.
  3. Destruction of hostage data, file, and system.
  4. Business downtime
  5. Victimized company’s reputation dropdown
  6. Productivity loss
Apart from the ransom, the cost of downtime because of restricted system access will bring major concerns. It’s a fact that due to downtime victims may has to pay a cost of ten thousand dollars daily. As, Ransomware is becoming more and more widespread, so all companies require to brush up on their annual cyber-security goals. Moreover, approach for some appropriate implementations of Ransomware recovery plans and commit sufficient funds in their IT budgets for cyber-security resources. Among the most effective impact of Ransomware, “data encryption” is very hard to deal with. Meanwhile, this victim is completely restricted to access any of their encrypted data. The only way for unlocking these encrypted files is through the decryption key which only belongs to hackers. Many times, the decryption key is given to the organization, after the payment of the ransom. But there are also some cases when data is not handover to the victim, even after the ransom payment. The main risk that generates with “operational impact of Ransomware” is on the businesses. Can you just imagine, what will happen if all of a sudden entire services or processes of your business halt down?

Well, this dreadful Ransomware threat is so impactful that it can:

  1. Close down the entire plant
  2. Freeze manufacturing control system
  3. Make other backlogs
All the damages that occur due to downtime can be a major one and can have so many consequences. A well-organized strategy of backup and recovery will not certainly make the Ransomware attack painless. As this takes an extensive amount of money and time for data restoration.

Apart from that, the decision of recovering your system using the backup moreover depends on three things:

  1. First the amount of data loss that is considered acceptable by your business or organization.
  2. Up to how extent, the impact of Ransomware has spread
  3. How fast the Ransomware attack was spotted.
However, in many cases, data gets so encrypted that you can’t revert back to the restore point. At that time external backup is considered the best option. Among the wide-reaching impact of Ransomware “Data loss” is the most effective one.  As it starts from little disruption and leads to permanent business failure. Sometimes data loss in a Ransomware attack leads to disclosure of all your confidential information which ends up in fines and lawsuits. Attackers always look for backup files and folders after encrypting your system data. So that user can’t retrieve their corrupted file from the backup. Such dreadful activities make this Ransomware threat so profitable and effective. Victims don’t have any choice left either they have to pay the ransom or they have to face their risk of data loss.
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