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.

10 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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Fix Installer encountered an error 0x800f0905

Are you trying to update your Windows 11 OS and are receiving a 0x800f0905 error? Do not sweat and do not worry we have a couple of solutions that you can try in order to fix this issue. How this error is tied to various things like misconfigured settings, corrupt system files, and more there is no way to present one simple solution that will solve everything in one click.

error 0x800f0905 Therefore we are presenting a couple of solutions that will fix your issue, it is advisable to follow them as presented since they will go from the most common to the more complex one.

Run the troubleshooter

The most common fix and one that will actually repair things most of the time is simply running the Windows Update troubleshooter.

Press ⊞ WINDOWS + I to open the Settings app
Click on System on the left
Click on Troubleshoot in the right part
Click on Other Troubleshooters
Find the Windows Update section and click on Run
Let troubleshooter finish

Reset Windows update components

If the previous solution did not work we will need to do things manually. Follow the steps as presented in order to reset Windows update components.

Press ⊞ WINDOWS + S to open search
Type in Terminal
Select Run as administrator
Click on Yes on the User account control (UAC) pop up
Press CTRL + SHIFT + 2 to open Command prompt
Inside command prompt type each line of a command followed by ENTER after each line:
net stop bits
net stop wuauserv
Del “%ALLUSERSPROFILE%Application DataMicrosoftNetworkDownloaderqmgr*.dat”
Ren %Systemroot%\SoftwareDistribution\DataStore DataStore.bak
Ren %Systemroot%\SoftwareDistribution\Download Download.bak
Ren %Systemroot%\System32\catroot2 catroot2.bak
exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
cd /d %windir%\system32
regsvr32.exe atl.dll
regsvr32.exe urlmon.dll
regsvr32.exe mshtml.dll
regsvr32.exe shdocvw.dll
regsvr32.exe browseui.dll
regsvr32.exe jscript.dll
regsvr32.exe vbscript.dll
regsvr32.exe scrrun.dll
regsvr32.exe msxml.dll
regsvr32.exe msxml3.dll
regsvr32.exe msxml6.dll
regsvr32.exe actxprxy.dll
regsvr32.exe softpub.dll
regsvr32.exe wintrust.dll
regsvr32.exe dssenh.dll
regsvr32.exe rsaenh.dll
regsvr32.exe gpkcsp.dll
regsvr32.exe sccbase.dll
regsvr32.exe slbcsp.dll
regsvr32.exe cryptdlg.dll
regsvr32.exe oleaut32.dll
regsvr32.exe ole32.dll
regsvr32.exe shell32.dll
regsvr32.exe initpki.dll
regsvr32.exe wuapi.dll
regsvr32.exe wuaueng.dll
regsvr32.exe wuaueng1.dll
regsvr32.exe wucltui.dll
regsvr32.exe wups.dll
regsvr32.exe wups2.dll
regsvr32.exe wuweb.dll
regsvr32.exe qmgr.dll
regsvr32.exe qmgrprxy.dll
regsvr32.exe wucltux.dll
regsvr32.exe muweb.dll
regsvr32.exe wuwebv.dll
netsh winsock reset
net start bits
net start wuauserv

Well, that was a lot of typing or copy and pasting line by line followed by ENTER after each one but hopefully, your issue is solved. These provided solutions fixed most users' issues with this error but if for some reason this is not the case for you, move to the next step.

Run the SFC scan

If you are still having 0x800f0905 error after previous attempts do the following:

Press ⊞ WINDOWS + S to open search
Type in Terminal
Select Run as administrator
Click on Yes on the User account control (UAC) pop up
Press CTRL + SHIFT + 2 to open Command prompt
Type in sfc /scannow and press ENTER
Wait for the scan to finish
Reboot the computer

Perform a system restore

If for any reason previous solutions have not provided you with the solution we will try to fix the issue by performing system restore.

Press ⊞ WINDOWS + S to open search
In the text box type in Create a restore point
Click on the closest match in search results, should be Create a restore point
Click on System Restore or on Next if there are no points created
Choose to restore a point from the list and click on next
Review settings and click on Finish
Wait for the process to finish and for the computer to restart

Manually install update

If for any reason Windows still cannot install the update, try installing it manually.

Go to Windows 11 update history and find the Knowledge base (KB) number for the latest version
Go to the official Microsoft Update Catalog
Paste the KB number in the search box and press ENTER
Click on DOWNLOAD
Double click on the downloaded file to launch the installer
Follow on-screen instructions and install the update

Perform Windows 11 reset

If nothing worked, reset your Windows 11 to its factory settings to fully repair and reset the whole operating system.

Blizzard caught destroying evidence

California's Department of Fair Employment & Housing has widened its anti-discrimination lawsuit against Activision Blizzard and claims the publisher has been shredding vital documents relevant to the ongoing investigation. A recent report from Kotaku described the department as offering poorly paid, highly insecure positions, with a culture of hostility towards LGBTQ+ testers. The DFEH's rewording of "employees" to "workers" now hopes to take these contractors' experiences into account. "As a contract employee, I feel there's a lot of pressure to excel, impress, and move through the ranks as fast as you can before your contract ends and you're forced to go 3 months without income or find another job," Axios reports one worker saying. "I take pride in what I do, but it feels like it's never enough." Activision's contentious hiring of union-busting third-party law firm WilmerHale "directly interferes" with its own investigation, it says. By going to WilmerHale, Activision appears to be claiming that all work related to the investigation is privileged and can't be shared with DFEH. The suit also claims that Activision HR shredded documents related to "investigations and complaints", against its legal obligation to retain them during the investigation. The relevant parts of the updated lawsuit were shared by Axios reporters Stephen Totilo and Megan Farokhmanesh, the former also noting that the DFEH "fixed their misspelling of Bill Cosby's name". "DFEH is also informed and aware that documents and records have not been maintained as required by law or by the DFEH's Document Retention Notice," the complaint reads, "including but not limited to documents related to investigations and complaints were shredded by human resource personnel and emails are deleted thirty days after an employees separation."

Speculation and answer from Activision Blizzard

Blizzard employee Jessica Gonzalez suspects that the costs of fines associated with destroying these documents may have been an easier blow for Blizzard to take than any penalties drawn from their existence in helping the lawsuit go through. In an email to Kotaku, Activision denied the shredding allegations and issued a statement outlining steps it had taken to improve company culture—including the ousting of high-level executives like Blizzard president J. Allen Brack. The full statement reads: "Throughout our engagement with the DFEH, we have complied with every proper request in support of its review even as we had been implementing reforms to ensure our workplaces are welcoming and safe for every employee. Those changes continue today, and include:

Several high-level personnel changes
Revamped hiring and recruiting practices requiring diverse interview panels
Greater transparency on pay equity
Expanded and improved training and investigative capabilities for human resource and compliance staff
Created investigation teams outside of business units to support greater independence
Restructured divisions to support greater accountability
Enhanced review processes to include evaluation of managers by employees
Clear boundaries on workplace behavior with a zero-tolerance approach to harassment and other actions that diminish or marginalize.

"We strive to be a company that recognizes and celebrates the diverse talents and perspectives that lead to the creation of great, globally appealing entertainment. We have provided the DFEH with clear evidence that we do not have gender pay or promotion disparities. Our senior leadership is increasingly diverse, with a growing number of women in key leadership roles across the company. "We share DFEH’s goal of a safe, inclusive workplace that rewards employees equitably and is committed to setting an example that others can follow."

California and RIOT

Beyond Activision Blizzard, California's DFEH has also probed into League of Legends creator Riot Games, accusing the studio of dragging its heels over sexual harassment allegations dating back to 2019. Riot denied the allegations, telling us that it "will never retaliate against anyone for talking to any government agency".

Ventoy software review

There is a lot of software on the market today, but from time to time we discover something extraordinary and unique worth sharing and today we have a threat for you. Ventoy is a tool that will help you with system reinstallations and system maintenance once and for all.

If you are a computer user that has multiple operating systems or you are installing and maintaining different hardware via different OS there is a high chance that you have multiple USB sticks with different operating systems on them.

Now the problem with that is that there are probably too many unlabeled sticks around or you do not have enough so you keep making system USBs depending on which one you might need.

Ventoy solves all of these problems by letting you have as many operating systems images as your USB has capacity. The only thing you need to do is get the software here: https://www.ventoy.net/en/index.html and make a USB with it, then you can freely just copy your ISO images onto the USB and once it is inserted into the computer you will be given a menu to choose which one you would like to start with, simple as that.

Features

100% open source (license)
Very simple to use (Get started)
Fast (limited only by the speed of copying the iso file)
Can be installed in USB/Local Disk/SSD/NVMe/SD Card
Directly boot from ISO/WIM/IMG/VHD(x)/EFI files, no extraction needed
Support to browse and boot ISO/WIM/IMG/VHD(x)/EFI files in local disk Notes
No need to be continuous in disk for ISO/WIM/IMG/VHD(x)/EFI files
Both MBR and GPT partition styles are supported
x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI, ARM64 UEFI, MIPS64EL UEFI supported
IA32/x86_64 UEFI Secure Boot supported Notes
Linux Persistence supported Notes
Windows auto installation supported Notes
Linux auto installation supported Notes
Variables Expansion supported for Windows/Linux auto-installation script Notes
FAT32/exFAT/NTFS/UDF/XFS/Ext2(3)(4) supported for main partition
ISO files larger than 4GB supported

Menu alias, Menu tip message supported
Password protect supported
Native boot menu style for Legacy & UEFI
Most types of OS supported, 1000+ iso files tested
Linux vDisk(vhd/vdi/raw...) boot solution Notes
Not only boot but also complete the installation process
Menu dynamically switchable between ListView and TreeView mode Notes
"Ventoy Compatible" concept
Plugin Framework and GUI plugin configurator
Injection of files into runtime environment
Boot configuration file dynamically replacement
Highly customizable theme and menu style
USB drive write-protected support
USB normal use unaffected
Data nondestructive during a version upgrade
No need to update Ventoy when a new distro is released

0x800701e3, The request failed due ...

A lot of things can go wrong even when you’re only doing some simple operations or tasks on your computer and this is due to the fact that there are various small operations make up in order to perform the larger operations on your computer. So if any of these smaller operations are not properly working, it crashes the operation as a whole and it throws an error code instead. And one of these error codes is Error 0x800701e3. This particular error pops up when an error has occurred in the File Explorer when a transfer is initiated from one disk to another in your Windows 10 computer. When you encounter this error, you will get the following error message:

“Error 0x800701e3: The request failed due to a fatal hardware error.”

There are several methods you can check out to fix this error – you can try to run System Restore or Check Disk or format the destination drive or check the SMART attribute of the drive. For more details, refer to each one of the following options.

Option 1 – Try to run System Restore

Error 0x800701e3 might be due to some adjustments you’ve made in your computer’s settings. Thus, to fix this error, you can try undoing those changes using System Restore. How? Refer to these steps:

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 then check if your mouse is now back to its normal state.

Option 2 – Try running the Check Disk utility

You can also run the Check Disk utility in fixing Error 0x800701e3.

In the Windows Search box, type “command prompt” and from the search results, right-click on Command Prompt and select “Run as administrator”.
After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /f /r /x /b
The command you entered will start to check for errors and fix them automatically. Else, it will throw an error message saying, “Chkdsk cannot run because the volume is in use by another process. Would you like the schedule this volume to be checked the next time the system restarts? (Y/N)”.
Tap the Y key to schedule Disk Check the next time your computer restarts.

Option 3 – Try to format the destination drive

Formatting the destination drive could also help you resolve error 0x800701e3. To format your drive, follow these steps:

First, open File Explorer and then right-click on the drive where you encountered the error.
Next, select Format from the context menu. This will open a new mini window.
Then select the NTFS option from the drop-down menu for the File System menu.
After that, check the box labeled as Quick Format.
Now click on Start. Keep in mind that doing so will remove all the contents of your storage device.

Option 4 – Verify the hard drive using SMART attributes

In case you don’t know, Windows has a built-in feature of SMART analysis which analyzes the hard drive/SSD and checks all the parameters by performing some minor operations. To use it, follow these steps:

Tap the Win + S keys and type “command prompt” in the field then right-click on the related search result and select the “Run as administrator” option.
After opening Command Prompt as admin, type the “wmic diskdrive get status” command and hit Enter.
You should get a result after that, and if you see that it’s “normal”, proceed to the next option below

Fix Boot Device Not Found 3F0 Error

Today we will be solving the Device not found 3F0 error which is a common error, especially among HP (HP Pavilion G6), Lenovo, Acer, and Dell laptops/desktops. This error occurs when the computer is turned ON and when the system is about to boot. It can happen on windows 7, 8, or 10. When a mentioned error occurs one of the following messages will be displayed on your screen:

“No bootable device – insert boot disk and press any key”
“No Boot Device Found. Press any key to reboot the machine”
“Boot Device Not Found. Please install an operating system on your hard disk. Hard Disk (3FO)”
“No boot device is available”

The most common reasons for 3F0 error to occur is:

Using the unbootable device or disk to boot from.
If the bootable hard drive you are using might have corrupted or damaged somehow.
MBR or boot sector is damaged on the bootable hard drive.
If your system has gone through a virus or malware attack.
The wrong boot order in the BIOS.
Hard disk connection problem.
System files or boot files unknowingly damaged.
Corrupt hard drive partitions.

Now all of these being said let us go through some of the solutions and fix this dreaded error in order to get your computer back in working order:

1: Change Boot Order

This is well, the most simple solution and the easiest one, try to change the boot sequence in the BIOS settings of your motherboard. Sometimes most easier solutions can provide great results and solve our problems. If sadly this fails and the issue persists move to the next solution.

2: Perform a Hard Reset

Performing hard reset can often solve issues, to perform a hard reset do the following:

Turn off the computer and unplug the power adapter. If there is a removable battery, it should also be removed.
Then disconnect all peripherals, including the removable hard drive, etc.

then

Press and hold the power button for 15 seconds to drain all remaining power.
Insert the battery, and then re-plug the AC adapter into the laptop.
Press the power button to turn on the computer.
Once the computer starts up properly and the startup menu appears, use the arrow keys to select “Start Windows normally” and then press Enter.

Reconnect everything back of your peripherals. If by any chance problem still persists follow the next step:

3: Test Hard Drive Using HP Diagnostic Tool

Use the built-in tool in the Hp device to solve the issue:

Turn on your computer and keep pressing the Esc key until the menu appears on the screen.
Next, press the F2 key.
Choose the Components Tests option from the HP PC Hardware Diagnostics menu.
Select Hard Drive from the Component Tests menu.
Click on the Quick Test, then click on the Run once button.
If there are still any issues with your hard drive, then run the Extensive Test.

4: Restore BIOS Default Settings

Press the Power button to start the computer, and immediately after this, repeatedly press the F10 key to enter the BIOS setup menu.
To load and restore BIOS Setup Default settings, press F9 on the BIOS setup menu.
Once loaded, press F10 to Save and Exit.
Select yes, and then press Enter when it says Exit Saving Changes.

5: Reconnect Your Hard Drive

Turn the computer off and remove the power cable.
If you have a removable battery, take it out
Disconnect your hard drive and then connect it back.
Reassemble your computer and turn the computer on to see if it fixed the issue.

6: Fix and Rebuild Damaged MBR

Boot from the original installation DVD (or the recovery USB)
At the Welcome screen, click Repair your computer.
Choose Troubleshoot.
Choose Command Prompt.
When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.

7: Fix Operating System

Prepare a Windows installation disc, CD/DVD or USB flash drive and connect it to your PC.
During the installation process, launch Command Prompt.
In Windows 7, under the System Recovery Options tab, click Startup Repair.
In Windows 8 and Windows 10, click Repair your computer, then select Troubleshoot > Advanced options > Automatic Repair (Windows 8) or Startup Repair (Windows 10).

8: Replace the Hard Disk

Fix Windows Update Error 0x8024000B

As you know, Windows Updates are essential for your operating system as it keeps it protected from potential threats, fixes bugs and improves your experience in using Windows 10. However, there are instances when Windows Updates also cause errors and one of them is the Windows Update Error 0x8024000B. One of the causes of this particular Windows Update error is that Windows was not able to read the Update Manifest file which is needed to install the Windows Updates. This means that the operation was canceled by either the service or the user. On the other hand, this error could also occur if you are not able to filter the results. When you encounter this error, you will see an error message that says, “WU_E_CALL_CANCELLED: Operation was canceled”. This indicates that the operation was canceled by the operating system itself. To resolve the Windows Update Error 0x8024000B, here are some suggestions you need to check out.

Option 1 – Try to run the Cleanup (Decline) Superseded updates PowerShell script

The first thing you can do to fix the Windows Update Error 0x8024000B is to run the Cleanup (Decline) Superseded updates PowerShell script. This is actually an easy fix since all you have to do is download and run it from the Microsoft Technet site. Once you’re done downloading and running the file, restart your computer and see if the error is fixed or not.

Option 2 – Try to rename the Spupdsvc.exe file

If the first option didn’t work, you can try renaming the Spupdsvc.exe file which is one of the reasons why you’re getting the Windows Update Error 0x8024000B.

First, tap the Win + R keys to launch the Run utility.
Next, type the following command and hit Enter to execute it in cmd:

/c ren %systemroot%System32Spupdsvc.exe Spupdsvc.old

The command you entered will rename the troublesome “Spupdsvc(.)exe” file to “Spupdsvc(.)old”.
Now restart your computer after the command has been executed.

Option 3 – Try to restart various Windows Update-related services and components

You could also try to restart some Windows Update-related services to resolve the Windows Update error. Refer to the following steps to do so:

Tap the Win + X key combination and select Command Prompt (Admin) to open Command Prompt with admin privileges.
After opening Command Prompt, copy and paste each one of the commands listed below one by one and tap Enter right after you enter each command.
- net stop wuauserv
- net stop bits
- net stop appidsvc
- ren %systemroot%SoftwareDistribution SoftwareDistribution.bak
- ren %systemroot%system32catroot2 catroot2.bak
Once you’ve entered all the commands given above, they will stop all the Windows Update services that are running on your computer as well as clear the SoftwareDistribution folder, and reset the Catroot2 folder. Now you have to start all these Windows Update services you’ve just stopped by executing the following commands:
- net start wuauserv
- net start bits
- net start appidsvc
- net start cryptsvc
After that, restart your computer and try to run the setup again, and see if the error is now fixed.

Option 4 – Try to run the Windows Update Troubleshooter

You should also try to run the built-in Windows Update troubleshooter as it could help you resolve the Windows Update Error 0x8024000B. To run it refer to these steps:

Go to Settings and then click on Windows Update from the given menu.
Next, click on the Troubleshoot option and select Windows Update from the given options to run the Windows Update troubleshooter.
After that, follow the next on-screen instructions and wait until the process is completed, and check if the Windows Update Error 0x8024000B is fixed or not.

Guide to Easily Fixing Error 1713

What Is Error 1713?

Error 1713 is essentially a programming error. It has specifically been designed in Microsoft applications. This is intended to allow customers to continue using the appropriate setup tool. The error can be quite annoying and is used by manufacturers to determine what caused the error so that counteractive methods can be employed. The number 1713 is simply the hexadecimal code that informs where the instruction was loaded when the error occurred.

Solution

Error Causes

As far as the causes of Error 1713 are in question, the primary cause is damaged, misconfigured, or corrupt windows system files. There are several other factors that lead to the occurrence of Error 1713. For instance, if the applications or hardware on your system has been improperly deleted, installed, or uninstalled, Error 1713 will occur. Similarly, Error 1713 is triggered when the computer has recovered from an attack by some virus, spyware, malware, or adware only recently. This attack corrupts the file and so the error appears. Incorrect system shutdown can also be blamed for this error. All the scenarios listed above actually damages the registry entries in Windows system files. The corrupt or damaged files will then lead to improperly linked or missing information. It goes without saying that such problems will keep the applications from performing in the desired manner and this makes it even more crucial to fix this error as soon as it appears.

Further Information and Manual Repair

Two of the most useful workarounds for Error 1713 are listed below.

This solution is for advanced users. Restart your computer. Log on to it as the admin in the safe mode. Now go to the Start button and follow this path All Programs-> Accessories-> System Tools->System Restore. Now an option will appear asking you to ‘Restore your computer to an earlier time’. Select it. This option will actually appear in a new window. Click Next. A list of restore points will be displayed to you. Select the most recent restore point before the occurrence of the error and press Next. Now click on the Next button that appears in the confirmation window. Restart your computer as soon as the restoration is finished.
This solution is for novice users. Download a 1713 repair utility available online. Install this program and use it to scan your system. After the scan is complete, click on repair to fix the error.

How to Fix Error 0199, Security password retry

The errors that are caused by the BIOS of your computer can get annoying as they can be hard to fix for they are really dangerous and won’t be resolved by simple fixes. This is because of the fact that these kinds of errors do not even allow you to load your operating system as it throws the error even before you can access your computer. One of these errors is the “Error 0199: System Security – Security password retry count exceeded”. Fixing this error can be quite tricky but you need not worry for you will be guided in doing so. Simply follow the given instructions below.

Option 1 – Try to update the BIOS

Updating the BIOS can help you fix the “Error 0199, Security password retry count exceeded” error but as you know, BIOS is a sensitive part of a computer. Even though it is a software component, the functioning of the hardware depends on it largely. Thus, you must be careful when modifying something in the BIOS. So if you don’t know much about it, it’s best if you skip on this option and try the other ones instead. However, if you are well-versed in navigating the BIOS, then follow the steps below.

Tap the Win + R keys to open the Run dialog box.
Next, type “msinfo32” in the field and press Enter to open System Information.
From there, you should find a search field on the bottom where you have to search for the BIOS version and then press Enter.
After that, you should see the developer and version of the BIOS installed on your PC.
Go to your manufacturer’s website and then download the latest version of BIOS on your computer.
If you are using a laptop, make sure that you keep it plugged in until you have updated the BIOS.
Now double click on the downloaded file and install the new BIOS version on your computer.
Now restart your computer to apply the changes made.

Option 2 – Try resetting the BIOS

If updating the BIOS didn’t help in fixing Error 0199, you can try to reset the BIOS instead.

Start your computer and tap the F10 key during the booting process to enter the BIOS. If it does not work, you can try tapping the F1 or F2 key as well as the Del key.
Once you’re already in the BIOS, tap the F9 key to get the prompt to RestoreLoad default configuration now for the BIOS.
Next, click on Yes and then follow the next on-screen instructions that appear to set the BIOS back to its default settings.
Once you’re done restoring the default settings of the BIOS, restart your computer and then check if it now boots properly.

Guide to Fixing PFN_LIST_CORRUPT Blue Screen

PFN_LIST_CORRUPT Blue Screen - What is it?

PFN_LIST_CORRUPT is a blue screen of death error code. It occurs when the PFN (Page Frame Number) list becomes corrupt. The Page Frame Number is basically used by your hard drive to determine your location of each one of your files on the disk. This error may occur when starting up the program or while using it. Blue screen of death errors occurs without any warnings. The program disrupts all of a sudden and the computer screen turns blue.

Solution

Error Causes

PFN_LIST_CORRUPT Blue Screen error may occur due to multiple reasons. Some of the common reasons include:

Hardware problems
Device driver issues
Registry problems
Viral Infection

It is recommended to resolve the PFN_LIST_CORRUPT Blue Screen of Death error immediately without any delay virtually because this error can be quite fatal to your PC. It can pose serious threats to your system like system freeze, crash, failure, and valuable data loss. Furthermore, if the error is related to viral infection, it can expose you to privacy issues, data breaches, and cybercrime too.

Further Information and Manual Repair

This is a critical PC error but easy to resolve. You don’t need any technical expertise to fix this error on your PC. Here are some quick and easy methods to resolve PFN_LIST_CORRUPT Blue Screen error:

Method 1: Install Compatible Device Drivers

Sometimes when new hardware is added to the PC, you need to install updated versions of the device drivers to ensure there are no incompatibility issues. Incompatibility between the hardware and device drivers may generate PFN_LIST_CORRUPT Blue Screen of death error on your screen. To resolve, it is advisable to download and install the latest updated versions of the device drivers from the manufacturer’s website.

Method 2: Scan for Viruses

PFN_LIST_CORRUPT Blue Screen of Death error may occur due to viral infection too. Viruses and spyware enter your PC when you log on to unreliable websites and download programs from there or open phishing emails on your PC. These viruses corrupt and damage programs and files resulting in such errors. To fix the issue, you need to install a powerful antivirus and ensure all kinds of viruses and spyware are detected and removed from your system.

Method 3: Clean and Restore the Registry

PFN_LIST_CORRUPT Blue Screen error indicates poor PC maintenance. When you don’t clean and remove unnecessary and obsolete files like junk files, bad registry keys, cookies, internet history, temporary files, and invalid entries from the registry, the registry overloads and gets damaged. These files accumulate taking up a lot of disk space and also corrupt system files. If these files are not removed timely, it results in registry issues like a blue screen of death errors and run-time errors. To remove these files and clean the registry, you need to install a powerful registry cleaner. Whether the underlying cause for PFN_LIST_CORRUPT Blue Screen of Death error on your PC is viral infection or registry issues, to resolve the BSOD error code in seconds download Restoro. This is a cutting-edge and multi-functional PC fixer deployed with both an antivirus and a registry cleaner. Additional features include a system optimizer too. It is user-friendly and easy to operate. You can download it on all Windows versions without any hassle. It is safe and bug-free. The registry cleaner feature scans and removes all unnecessary files, cleans and repairs the registry while the antivirus utility simultaneously removes all kinds of malicious software including spyware, viruses, Trojans, and malware. Click here to download Restoro now and resolve the PFN_LIST_CORRUPT Blue Screen of Death error immediately!

An Easy Guide to Fixing Error Code 14

Error Code 14 - What is it?

Generated due to temporary device and Window system conflicts, Error code 14 is a typical Device Manager error. This error code can pop up anytime and usually displayed in the following format:

“This device cannot work properly until you restart your computer. (Code 14)”

Though it is not a fatal error code like the infamous Blue Screen of Death and runtime error codes, nonetheless it is still advisable to repair it immediately before any delay to avoid inconvenience.

It can lower your PC’s performance and hamper you from using certain hardware devices as a result of driver problems.

Solution

Error Causes

Error 14 is triggered when your system is unable to correctly read the files and settings which is important for running a certain piece of your PC hardware. Now this conflict may occur due to reasons like outdated, corrupted, or poorly installed drivers. Other causes may include corrupted registry entries.

Simply put, Error code 14 is a good reminder that PC users should pay attention to updating device drivers to ensure healthy systems and optimum PC performance.

Further Information and Manual Repair

The good news is that error code 14 is quite easy to resolve. You don’t have to spend hundreds of dollars to hire a professional programmer to get it fixed. To repair, simply follow the DIY methods listed below.

We have compiled some of the best, proven, and easy to perform solutions for PC users to resolve Device Manager error codes like error code 14. Follow the instructions here to resume the functionality of your PC.

Let’s get started:

Method 1 - Reboot Your System

Sometimes, an action as simple as rebooting your PC can also resolve technical problems like error code 14. So, before you try any other method, try giving this a shot.

The moment the error code pops on your screen, simply close all the programs running on your system and restart your PC. This refreshes your system settings, processes and services allowing it to run smoothly.

However, if the error still persists, then try other methods given below.

Method 2 - Delete the Corrupted Registry Entries

Corrupted registry entry can also trigger error code 14. To resolve delete the corrupted registry entries. For this, go to the start menu and type Regedit. A dialog box will open. Now navigate through the HKEY_LOCAL_MACHINE key. Expand further to locate HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass. Once located, now in the right pane click upper filters and then click delete on the edit menu. Click yes when prompted to confirm the deletion.

Now in the right pane, click lower filters. Repeat the same steps as performed to delete upper filters. Confirm deletion and then exit the registry editor. To activate changes, restart your PC. This will hopefully resolve the issue. If the error code pops up on your computer screen, then try method 3.

Method 3 - Update Corrupted/Outdated Drivers

Drivers are basically software applications that communicate and provide instructions to your system to operate hardware devices.

When these become corrupt or outdated, you start experiencing problems like error code 14. To resolve, locate corrupted drivers and update them. You can do it both manually and automatically. We’ll discuss both ways.

For a manual driver update, go to the start menu, control panel, and then Device Manager. Now go through all devices listed to locate problematic drivers. To identify problematic drivers, look for yellow exclamation marks next to each device. Devices with yellow exclamation marks indicate that driver issues. To repair, right-click on each hardware device and select update driver.

Method 4 - Install DriverFIX - Alternative to Manual Driver Update

Updating each driver separately and manually is a stressful and frustrating task. This can take a lot of your time. Sometimes, you may also have to download new driver versions from the internet to install perform updates. To avoid the hassle and save time, it is advisable to install a program like DriverFIX.

This user-friendly and intuitive software is based on sophisticated technology featuring an intelligent programming system that automatically detects all your PC drivers in seconds.

Once you install this software on your system, it instantly identifies problematic drivers and matches them to the latest versions. It updates PC drivers immediately thereby resolving the error code 14 problem in a few seconds. It enables accurate installations and ensures that your PC runs at its optimum level.

More importantly, with this software installed on your PC, you don’t have to worry about keeping track of your driver updates anymore. The software updates drivers on a regular basis with new and compatible versions ensuring that your PC functions properly and you don’t experience any type of Device Manager error code. It is easy to use and install. It is compatible with all Windows versions.

Click here to download DriverFIX to resolve error code 14 on your system right away.

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