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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How to Install SafeBytes Anti-Malware Software When Malware Blocks or Prevents the Process

All malware is detrimental and the magnitude of the damage will vary greatly depending on the type of infection. Some malware variants modify internet browser settings by adding a proxy server or modify the PC's DNS settings. When this happens, you'll be unable to visit certain or all the sites, and therefore not able to download or install the required security software to clear out the computer malware. If you’re reading this article, chances are, you’re stuck with a virus infection that is preventing you from downloading and/or installing the Safebytes Anti-Malware program on your computer. Refer to the instructions below to remove malware through alternate methods.

Method 1: Install Anti-Malware in Safe Mode with Networking

If the malware is set to load automatically when Microsoft Windows starts, entering safe mode may block the attempt. Since only the minimal applications and services start-up in safe mode, there are rarely any reasons for conflicts to happen. You will need to do the following to remove malware in Safe mode.

1) Tap the F8 key continuously as soon as your computer boots, however, before the large Windows logo or black screen with white texts come up. This would invoke the Advanced Boot Options menu.
2) Choose Safe Mode with Networking using arrow keys and press Enter.
3) When you are into this mode, you will have access to the internet once again. Now, utilize your web browser normally and download Safebytes Anti-Malware.
4) After installation, do a complete scan and allow the software to get rid of the threats it detects.

Method 2: Utilize An Alternate Internet Browser to Download Anti-Malware Software

Malicious program code may exploit vulnerabilities in a specific web browser and block access to all antivirus software sites. If you suspect that your Internet Explorer has been hijacked by computer malware or otherwise compromised by cybercriminals, the most effective plan of action is to switch to an alternate web browser such as Chrome, Firefox, or Safari to download your chosen security program - Safebytes Anti-Malware.

Download SafeBytes Anti-Malware for Malware Removal

Method 3: Install and Run Anti-Malware From a USB Drive

To effectively remove the malware, you might want to approach the problem of installing an antivirus software program on the affected computer from a different angle. Adopt these measures to employ a flash drive to fix your infected computer.

1) Use another malware-free PC to download Safebytes Anti-Malware.
2) Plug the thumb drive into the uninfected computer.
3) Double click on the executable file to open the installation wizard.
4) Choose the drive letter of the USB drive as the place when the wizard asks you exactly where you would like to install the anti-virus. Follow activation instructions.
5) Now, transfer the thumb drive to the infected computer.
6) Double-click the antivirus program EXE file on the USB flash drive.
7) Click on the “Scan Now” button to start the malware scan.

If no other method of downloading and installing the antivirus software works, then you've no other option than to hit the last resort: a full Windows reinstallation, the only approach known to have a 100% rate of success at virus removal.

MyImageConverter Removal Guide for Windows

This toolbar/web browser extension is ad/search-supported that is typically installed as an optional offer, users generally have this bundled with 3rd party software. During setup, this toolbar will modify the home page and new tab pages to the affiliate search portal MyWay.com using a primary search engine to collect shared search revenue. It will also modify the default search provider as well. While this extension is installed users will experience a display of additional ads and sponsored content throughout their browsing sessions, as well as the possibility of pop-up ads. Several anti-virus scanners have marked this extension as a Browser Hijacker and it is recommended to remove it from your computer.

About Browser Hijackers

Browser hijacking means that a malicious code has taken control over and altered the settings of your internet browser, without your consent. They are designed to interfere with browser programs for a variety of purposes. Usually, it’ll drive users to predetermined websites that are looking to increase their advertising campaign income. Though it may seem naive, all browser hijackers are damaging and thus always regarded as security risks. In a worst-case scenario, your internet browser can be hijacked to download malicious software that can do a great deal of damage to your laptop or computer.

How to know if your internet browser has been hijacked

The common symptoms that indicate having this malicious software on your PC are: 1. home page is modified 2. bookmark and the new tab are likewise modified 3. default online search engine is changed 4. you’re getting new toolbars you have never found before 5. your internet browser displays endless pop-up ads 6. your web browser has become unstable or starts running slowly 7. you can’t visit certain websites like homepages of anti-malware software.

Exactly how browser hijacker finds its way onto your computer system

Browser hijackers can enter a computer by some means or other, including via downloads, file sharing, and e-mail also. They may also come from any BHO, extension, add-on, toolbar, or plug-in with malicious intent. Browser hijackers sneak into your pc in addition to free software application downloads that you unintentionally install alongside the original. Some of the most popular hijackers are MyImageConverter, Conduit Search, Babylon Toolbar, Sweet Page, OneWebSearch, and CoolWebSearch.

Learn how to get rid of browser hijackers

Certain hijackers could be removed by just uninstalling the related freeware or add-ons through the Add or Remove Programs in the Windows control panel. In some cases, it could be a difficult job to find and remove the malicious piece because the associated file could be running as part of the operating system process. Besides, browser hijackers can modify the Windows registry so it can be quite tough to restore all the values manually, especially when you are not a very tech-savvy person. You can choose automatic browser hijacker removal by just installing and running an efficient anti-malware program. SafeBytes Anti-Malware detects all types of hijackers – including MyImageConverter – and eliminates every trace quickly and efficiently. In addition to anti-virus software, a PC optimizer program, like Total System Care, can help you fix Windows registry errors, remove unwanted toolbars, secure your internet privacy, and boost overall computer performance.

What to Do if Virus Stops You From Downloading Or Installing Antivirus?

Practically all malware is bad, but certain types of malware do much more damage to your PC than others. Some malware variants alter web browser settings by adding a proxy server or change the PC’s DNS configuration settings. In such cases, you’ll be unable to visit some or all of the websites, and therefore not able to download or install the required security software to clear out the computer virus. If you are reading this now, you might have perhaps realized that virus infection is a reason behind your blocked net connectivity. So how to proceed if you need to install an anti-virus software like Safebytes? Follow the instructions below to remove malware by alternate methods.

Download the software in Safe Mode with Networking

The Windows operating system comes with a special mode referred to as “Safe Mode” in which only the minimum required programs and services are loaded. In the event the malware is blocking internet connection and affecting your computer, running it in Safe Mode enables you to download anti-virus and run a diagnostic scan whilst limiting potential damage. To get into Safe Mode or Safe Mode with Networking, press F8 while the system is booting up or run MSCONFIG and locate the “Safe Boot” options in the “Boot” tab. Once you are in safe mode, you can try to install your anti-malware application without the hindrance of the malware. Now, you can run the antivirus scan to get rid of viruses and malware without hindrance from another malicious application.

Download the security software using an alternate internet browser

Some malware only targets particular web browsers. If this sounds like your situation, utilize another web browser as it might circumvent the virus. If you seem to have a trojan attached to Internet Explorer, then switch to an alternate web browser with built-in safety features, such as Firefox or Chrome, to download your preferred anti-malware program – Safebytes.

Install anti-malware on a USB drive

Another option would be to make a portable antivirus program on your USB flash drive. To run anti-malware from a USB pen drive, follow these simple measures: 1) On a virus-free computer, download and install Safebytes Anti-Malware. 2) Plug the USB drive into the clean computer. 3) Double-click on the downloaded file to open the installation wizard. 4) Select the drive letter of the flash drive as the location when the wizard asks you exactly where you want to install the antivirus. Follow the on-screen instructions to finish the installation process. 5) Transfer the flash drive from the uninfected computer to the infected computer. 6) Double-click the Safebytes Anti-malware icon on the USB drive to run the software. 7) Hit the “Scan” button to run a full computer scan and remove viruses automatically.

Protect Your PC and Privacy With SafeBytes Anti-Malware

Are you looking to install the best anti-malware software program for your PC? You can find many applications on the market which come in free and paid versions for Windows systems. A few of them do a great job in eradicating malware threats while some will affect your PC themselves. You should look for a product that has obtained a good reputation and detects not only viruses but other types of malware as well. While considering the highly regarded applications, Safebytes AntiMalware is certainly the highly recommended one. SafeBytes anti-malware is trustworthy software that not only secures your PC completely but is also quite user-friendly for people of all ability levels. Through its cutting-edge technology, this software will help you protect your computer against infections caused by various kinds of malware and similar internet threats, including adware, spyware, viruses, worms, trojans, keyloggers, ransomware, and potentially unwanted program (PUPs).

SafeBytes anti-malware offers an array of advanced features which sets it aside from all others. Let’s take a look at a few of them below:

Real-time Threat Response: SafeBytes provides real-time active supervision and protection from all known computer viruses and malware. It’ll inspect your personal computer for suspicious activity regularly and its unrivaled firewall protects your computer from illegal access by the outside world. World-class AntiMalware Protection: Using a critically acclaimed anti-malware engine, SafeBytes offers multilayered protection which is designed to catch and get rid of viruses and malware that are hidden deep inside your computer’s operating system. Web protection: SafeBytes inspects the hyperlinks present on a webpage for possible threats and notifies you if the site is safe to visit or not, through its unique safety ranking system. Light-weight: This application is not “heavy” on the computer’s resources, so you’ll not see any performance troubles when SafeBytes is working in the background. 24/7 Customer Support: Support service is readily available 24 x 7 x 365 days through email and chats to answer your concerns. SafeBytes has developed a great anti-malware solution to help you conquer the latest malware threats and virus attacks. You can be sure that your computer will be protected in real-time once you put this tool to use. So if you’re looking for the absolute best malware removal application out there, and if you don’t mind paying out a few bucks for it, opt for SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

To get rid of MyImageConverter manually, navigate to the Add or Remove programs list in the Control Panel and choose the program you want to get rid of. For web browser extensions, go to your browser’s Addon/Extension manager and choose the plug-in you intend to disable or remove. You may also want to reset your home page and search engine providers, and also delete temporary files, browsing history, and cookies. If you opt to manually delete the system files and Windows registry entries, utilize the following checklist to make sure you know precisely what files to remove before performing any actions. But bear in mind, editing the Windows registry is usually a difficult task that only advanced users and professionals should attempt to fix the problem. In addition, some malware is capable of replicating or preventing removal. It is highly recommended that you carry out the removal procedure in Windows Safe Mode.

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HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\99e1f6fd-2e94-4cf6-8344-1ba63cd3bd9b HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\a86782d8-7b41-452f-a217-1854f72dba54 HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\ed345812-2722-4dca-9976-d01832db44ee HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins\@MyImageConverter_4z.com/Plugin HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\9103c314-c4e2-4463-8934-b19bcb46236d HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\97cef41c-5055-474a-855a-892d4fe3e596 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\d375ee64-f893-498a-a0e9-0e9829c88c3d HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\MyImageConverterCrxSetup_RASAPI32 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\MyImageConverterCrxSetup_RASMANCS HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\312f84fb-8970-4fd3-bddb-7012eac4afc9 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\c547c6c2-561b-4169-a2a5-20ba771ca93b HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\1f6f39c1-00a8-4752-a94c-d0ea92d978b6 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\71144427-1368-4D18-8DC9-2AE3CC4C4F83 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\99e1f6fd-2e94-4cf6-8344-1ba63cd3bd9b HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\a86782d8-7b41-452f-a217-1854f72dba54 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\ed345812-2722-4dca-9976-d01832db44ee HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@MyImageConverter_4z.com/Plugin HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, value: MyImageConverter Search Scope Monitor HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\VDC_is1 HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\Extensions\adldappccjhelkmbkpiibilgnnjakieg HKEY_LOCAL_MACHINE\SOFTWARE\MyImageConverter HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MyImageConverter_4z HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MyImageConverter.ScriptHelper HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MyImageConverter.ScriptHelper.1 HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\cf6e4b1c-dbde-457e-9cef-ab8ecac8a5e8 HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\MyImageConverter HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@MyImageConverter_ScriptHelper.com/Plugin HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, value: MyImageConverter_4z Browser Plugin Loader HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run, value: MyImageConverter_4z Browser Plugin Loader HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\LowRegistry\DOMStorage\MyImageConverter.dl.tb.ask.com HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\DOMStorage\MyImageConverter.dl.myway.com HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\MyImageConverter.com HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\LowRegistry\DOMStorage\www.MyImageConverter.com HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\DOMStorage\free.MyImageConverter.com HKEY_LOCAL_MACHINE\HKEY_CURRENT_USER\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..Uninstaller

Best VR headsets in 2021 so far

Virtual Reality is slowly becoming standard in gaming. More and more affordable headsets are coming out lowering entry prices and making them affordable for all. But in a sea of new VR headsets, it is important to at least purchase a decent one that will perform nicely and hopefully last longer. Therefore in today’s article, we will address some of the best options currently available on the market,

Oculus Quest 2

With its Rift model, Oculus set itself as a big player in VR. Now the company is slowly bowing out of the dedicated, tethered VR headset with its latest Quest 2 designed to primarily be a standalone headset. In case you do not know, tethered headset means that the headset itself is connected to your PC and is using its power to drive your VR experience. Now technical specifications of Quest 2 are pretty OK and it can drive stuff pretty decently and if you want you can purchase the dedicated cable to connect it to your PC for the full experience of games requiring more capable hardware. Oculus Quest 2 is the cheapest headset on this list and with its stable performance, is highly recommended.

Valve Index VR

Although the headset itself is nothing revolutionary or special its controllers are. They can track individual finger movements, making games (that take advantage of them) much more immersive than the standard trigger grips on other controllers. The Index's higher refresh rate makes for smoother action, as well, which is another nice bonus. If you already have an HTC Vive or Vive Cosmos Elite, and their base stations (not the regular Cosmos), you can buy only the controllers.

Sony PlayStation VR

The PlayStation VR is compelling thanks to Sony backing its development, plus the PlayStation 4's affordability and availability compared with gaming PCs. All you need is the headset, a PlayStation 4, and a PlayStation Camera (now included with most PlayStation VR bundles). Not really the best of the bunch but still one of the top ones for console gaming. Sony is working on a new PlayStation VR system for the PlayStation 5, with redesigned controllers. The new headset hasn't been revealed yet, but the company has released a preview of the new controllers.

HP Reverb G2 VR

HP headset is one which you get if you want the best image quality in VR headset, sadly controllers did not follow the same quality of headset itself. But this is still a pretty decent headset overall and worth the purchase.

HTC Vive Cosmos

HTC's Vive Cosmos is the upgraded version of the Vive. It features a higher resolution and replaces the external base stations with outward-facing cameras for motion tracking. It's a comprehensive package for whole-room VR. HTC recently released the Vive Pro 2, a high-end VR headset targeting both enterprise users and consumers. This new headset features a 2,448-by-2,448 resolution display for each eye, making it the highest-resolution headset currently available. It's also more expensive than the Cosmos Elite. Sadly one thing that is bringing this headset down is the price.

What is Trojan Kryptik and what does it do

Trojan. Kryptik is a malicious computer infection known as a Trojan horse. Trojan. Kryptik can load at startup and recreate itself which makes it difficult to manually remove from the infected computer. Trojan. Kryptik can compromise the infected system by allowing a remote hacker to gain access without the user's permission or knowledge. Trojan. Kryptik can also lead to the infection of other unknown malware parasites.

Trojan.Kryptik creates the following registry entry or registry entries:

Directory %ALLUSERSPROFILE%\windrivgr 19.7 %LOCALAPPDATA%\DsHcaJnIIz File name without path scaalqtw.exe Regexp file mask %ALLUSERSPROFILE%\sqldump.exe %APPDATA%\b[NUMBERS].exe %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\[RANDOM CHARACTERS].com.url %APPDATA%\Origin\update.vbe %APPDATA%\Stanfind.exe %APPDATA%\vpn gui.exe %LOCALAPPDATA%\Microsoft\Windows\Symbols\wvfilters.sys %TEMP%\nvc.exe %TEMP%\system.exe %TEMP%\winsrvcs32.exe

How to Fix Chrome error 1603 & 0x00000643

If you encounter errors 1603 and 0x00000643 on your Windows 10 computer while trying to install or update your Google Chrome browser. Although most errors can be fixed by some simple troubleshooting steps, that is not the case for these two errors since they have pretty specific solutions. To resolve errors 1603 and 0x00000643 on your Chrome browser, here are some solutions you need to check out.

Option 1 – Try to run Microsoft Install and Uninstall Troubleshooter

Running the Microsoft Install and Uninstall Troubleshooter could help you fix errors 1603 and 0x00000643 in Chrome as well as the following issue in your Windows 10 computer:

Corrupted registry keys on 64-bit operating systems.
Corrupted registry keys that control the updated data.
Problems that:
- Prevent new programs from being installed.
- Prevent new programs from being installed.
- Problems that block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel.

To use the Microsoft Install and Uninstall Troubleshooter, refer to the given steps below.

First, right-click on the downloaded MicrosoftProgram_Install_and_Uninstall.meta.diagcab file and run it with administrative privileges.
Next, it will offer you two scenarios to troubleshoot namely, “Installing” or “Uninstalling” and you have to select Installing to resolve the current errors.
After that, it will show you a list of available programs on your computer. From there, select Google Update Helper and then click Next.
It will then start to troubleshoot the problem and will automatically apply the fixes for you. It will offer you to uninstall Chrome if it turns out that it’s the root cause of the problem.
After that, you need to download Google Chrome again and then reinstall it.

Option 2 – Try to clean reinstall Chrome

There are instances when programs leave files behind after you’ve uninstalled them and the same thing can happen to Chrome so before you reinstall Chrome, you have to make sure that you have deleted the User Data folder. To do so, refer to the following steps:

Hit the Win + R keys to open the Run dialog box.
Next, type “%LOCALAPPDATA%GoogleChromeUser Data” in the field and hit Enter to open the User Data folder.
From there, rename the default folder and name it something else, e.g. “Default.old”.
After that, install Google Chrome again and check if the issue is now fixed.

Option 3 – Try running the Chrome Cleanup tool

You might want to run Google Chrome’s built-in Malware Scanner & Cleanup tool as it could also help in getting rid of any unwanted ads, pop-ups, and even malware, as well as unusual startup pages, toolbars, and anything else that might overtake the network and could affect the performance of the browser.

Option 4 – Try to run the Network Troubleshooter

Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
Next, scroll down and select the “Network Adapter” option from the right pane.
Then click on the Run Troubleshooter” button.
After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 5 – Reset Chrome

Resetting Chrome can also help you fix the error. This means that you will be restoring its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

Open Google Chrome, then tap the Alt + F keys.
After that, click on Settings.
Next, scroll down until you see the Advanced option, once you see it, click on it.
After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
Now restart Google Chrome.

Windows Clock is missing, invisible or black

Although the Windows Updates do bring in new features and improvements, there are times when they also introduce issues as well. The main cause for these arising bugs is the incompatibility between the old and new software components. One of the issues brought in by such bugs is Clock is missing, invisible or black This problem was experienced by users after they recently installed a feature update. This particular bug can make the Windows clock in the taskbar appear to be black or invisible which makes it hard for users to read the time on their computers. According to experts, this bug has something to do with the Windows Themes and Aero styling. To fix this issue, here are some suggestions that could help but before you get started, you have to restart Explorer first and see if it can help in resolving the problem – if it didn’t, follow the options given below carefully.

Option 1 – Try to disable Custom Theme

It could be that the reason behind the black or invisible Windows Clock can be an old or an incompatible theme. You might have a custom theme in place and it became incompatible after an update. Thus, you can try switching to one of the default themes and then recreate your custom theme afterward. To do so, follow the steps below.

Right-click on your desktop and select Personalize.
Next, select Themes from the left menu and then select Windows 10 as your theme.
After that, you can delete all the other custom themes and create them again from scratch. This should fix the black or invisible Windows 10 Clock.

Option 2 – Try to edit your existing themes

If you don’t want to get rid of your existing themes, there is an alternative solution you can try to fix the missing Windows 10 Clock albeit it’s a bit of a complex one. Follow the given steps below to modify the existing themes and fix the missing or black Windows Clock.

First, you need to save your existing theme. Just simply right-click on your desktop and select Personalize and select Themes from the left menu.
Next, click on the Save Theme button below your custom theme to save it. You can name the theme anything.
After that, you can now modify the saved theme by going to C:/Users/UserName/AppData/Local/MicrosoftWindowsThemes.
From there, look for the file with the theme name you just saved, and then right-click on the file and open it with notepad or any other text editing app.
Now you have to look for the line that says, “Path=%SystemRoot%resourcesthemesAeroAeroLite.msstyles” and change it to “Path=%SystemRoot%resourcesthemesAeroAero.msstyles” and then save the file and rename it with some other name.
Afterward, go back to themes and select the new theme you’ve created. This should resolve the Windows Clock issue as well as other Themes and Taskbar issues.

Option 3 – Try disabling the small icons in Taskbar

This option should help you fix any Windows Clock cases. So if your Windows Clock is nowhere to be found, you can try to disable small taskbar icons on your Windows 10 PC.

Go to Settings > Personalization > Taskbar.
From there turn off the toggle button for the “Use small taskbar buttons” option. Note that this solution is only a temporary one and it may or may not work in some cases.

Mfplat.dll is missing or was not found

One of the primary packages that install the Windows Media Player is the Media Feature Pack among other related files that are needed by the associated software products. And one of the essential DLL files in that package is the mfplat.dll file which is needed by various games and streaming services. So if this DLL file goes missing, you will most likely encounter any of the following error messages:

“mfplat.dll missing”
“The application failed to start because mfplat.dll was not found.”
“The program can’t start because mfplat.dll is missing from your computer.”

In other circumstances, the Media Feature Package does not come pre-installed with the main Windows package especially for those who use Windows N, thereby causing the error to pop up. The main cause of this problem is that users who use Windows 10 N do not have the Media Feature pack pre-installed with the installation package. Aside from that, the installation package could go missing after a few Windows Updates or if you have uninstalled it by accident. To resolve this problem, you need to check out each one of the given options below.

Option 1 – Try to enable Media Playback via Command Prompt

If you encounter the mfplat.dll missing error when you attempt to run PLEX or other similar streaming service and you’ve already verified that the Media Feature Pack is indeed installed, you might want to try enabling it using an elevated Command Prompt. There are cases when a particular Windows Update ends up disabling the feature and creates the grounds which results in the mfplat.dll missing error. Thus, you can have to enable the feature via Command Prompt.

Tap the Win + R keys to open the Run dialog box.
Then type “cmd” in the field and hit Enter to open an elevated Command Prompt.
Next, click on Yes if a User Account Control prompt pops up.
After opening Command Prompt, copy and paste the following command and hit Enter to execute it:

dism /online /enable-feature /featurename:MediaPlayback

Close Command Prompt and then open the app once again to check if the problem is now fixed.

Option 2 – Try installing the Media Feature Pack for Windows 10 N version

As mentioned, the Windows 10 N version does not come with Windows Media Player. Meaning to say, the Media Feature Pack is also not installed by default or won’t be updated by the Windows Update component. So if you are not quite sure what Windows 10 version you currently have installed, refer to these steps:

Tap the Windows key + S and then type “about” in the search box.
From the search results, click on the “About your PC” to open the About tab of the Settings app.
Afterward, scroll down to the Windows specifications and check your Windows version under Edition.

Note: If you have verified that your PC is using the Windows 10 N version, you need to install the appropriate Media Feature Pack for your computer. How? Refer to the steps below:

Click this link to download and install the Media Feature Pack from Microsoft’s official website.
Upon installation, select the edition you want to install using the drop-down menu and then click on Confirm. Take note that there are few reasons why you’d want to install the older version since most streaming services like PLEX and most games usually require version 1803.
After that, wait until the request is validated. The download should begin in a few minutes automatically.
Once the download is completed, open the installation executable file and follow the next on-screen instructions to install the Media Feature Pack on your computer.
Restart your computer. After your computer has rebooted, open the application where you’re getting the mfplat.dll missing error and then check if the problem is now fixed.

Option 3 – Try to extract a copy of the mfplat.dll file from the windows.old directory

If you encounter the error shortly after you just upgraded to Windows 10 from an older version, the best thing you can do to resolve the problem is to use windows.old directory to fetch an old copy of the mfplat.dll file. To do so, follow the steps below.

Go to the Windows drive and then look for the windows.old directory where it preserves a copy of your old operating system as well as associated files in case something goes out of hand during the upgrade process.
After that, open the windows.old folder and then go to the syswow64 folder.
Next, from the syswow64 folder, copy the mfplat.dll file and paste it to C:/windows/syswow64.
Restart your computer and check if the error is now resolved or not.

A Quick Guide to Fixing the Stop C00002lA Fatal System Error

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

The incompatible third-party program
Hard disk issues
Service pack installation has failed
Mismatched system files have been installed
Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.

Fix 0xc0000454, The Boot Configuration ...

If you are in the process of booting up your computer but suddenly encountered an error saying, “The Boot Configuration Data for your PC is missing or contains errors” with an error code of 0xc0000454, read on as this post will help you resolve the problem. The error code 0xc0000454 occurs when you boot your computer and when the Windows Boot Manager encounters an issue with the Boot Configuration Data or BCD. The error code 0xc0000454 (STATUS_INSUFFICIENT_NVRAM_RESOURCES) signifies that there are no sufficient NVRAM or Non-Volatile Random Access Memory resources to complete the API. NVRAM is a component of the system based on the software that stores the Boot Configuration Data in an operating system. Usually, a simple restart can resolve the problem. However, if you’ve already done that and it’s of no use, then there are other potential fixes you can check out to troubleshoot the problem. To resolve the error code 0xc0000454, here are some potential fixes that should help:

Option 1 – Try to repair corrupted BCD

As mentioned, the error could also be due to corruption in BCD, and to fix it, you can use Bootrec.exe – a built-in command-line tool used to troubleshot issues related to boot up and Windows Startup. Before you run this tool, make sure that you have inserted a bootable USB or DVD into your computer. Once you have that covered, follow these steps:

You need to go to the Advanced Startup Options.
Then click on Troubleshoot.
Next, select the Advanced Options and then Command Prompt.
Once Command Prompt has been pulled up, enter each one of the following commands and in the sequence that they are given to rebuild BCD files and repair MBR files:
- Bootrec /Fixmbr
- Bootrec /FixBoot

After you execute the commands given above, you should see a confirmation message that says, “The operation completed successfully”.
Now type the “Bootrec /RebuildBCD” command to rebuild BCD.
Finally, close Command Prompt and then restart your computer to successfully apply the changes made.

Option 2 – Try to run the Automatic Repair Utility

You might also want to use Automatic Repair in fixing the error. To do so, follow the steps below.

You can start by creating and booting from a bootable Windows 10 USB Stick.
After that, click on Repair your computer located on the bottom left corner when you are on the initial Windows Startup screen.
Next, click on Troubleshoot, and then on the other screen, click the Startup Repair option.
Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

Option 3 – Disable the Secure Boot in the BIOS

Disabling the Secure Boot in the BIOS settings is definitely recommended to resolve the error. To disable Secure Boot, here’s what you have to do:

First, boot your computer into Windows 10.
Next, go to Settings > Windows Update. From there, check if there is anything that you have to download and install if you see any available updates. Usually, OEMs send and update the list of trusted hardware, drivers, and operating systems for your computer.
After that, go to the BIOS of your computer.
Then go to Settings > Update & Security > Advanced Startup options. If you click on Restart Now, it will restart your computer and give you all the advanced options.
Next, select Troubleshoot > Advanced Options. As you can see, this screen offers you further options including System restore, Startup repair, Go back to the previous version, Command Prompt, System Image Recovery, and UEFI Firmware Settings.
Select the UEFI Firmware Settings which will take you to the BIOS.
From there, go to the Security > Boot > Authentication tab where you should see Secure Boot. Note that every OEM has its own way of implementing the options so it varies.
Next, set Secure Boot to Disabled and set Legacy Support to On or Enabled.
Save the changes made and exit. Afterward, your computer will reboot.

Option 4 – Try to reset the BIOS

If updating the BIOS didn’t help in fixing the error, 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.

Windows got stuck on Preparing Windows screen

You might have experienced a situation when you restarted your Windows 10 PC after an upgrade and you tried logging into your account but only a screen with a message saying, “Preparing Windows”. If the screen only stays that way, this indicates that Windows 10 is trying to complete the upgrade or waiting for some files to load up so that you can use your account. Some users also reported that when they tried logging into their accounts, they also get the same message on their screens. To resolve this issue, read on as this post will show you what you can do if your Windows 10 PC is stuck on the “Preparing Windows” screen. A lot of users have tried logging back into their account once more but to no avail as the same screen still greets them. And even when they tried the Ctrl + Alt + Del combo, it still didn’t work. This only goes to show that your account might somehow be corrupted.

Option 1 – Try booting your PC into Safe Mode

The first thing you can do to resolve the issue is to try booting your computer into Safe Mode and then log in using an Admin account. If it seems like your admin account has caused the problem, you need to create an admin account first and then log in after you reboot into the account and then log off. After that, restart your PC normally and check if the problem’s resolved or not. If not, refer to the next given option below.

Option 2 – Try to repair your corrupted profile via Registry

In this second option, you can try to repair the corrupted profile using the Registry but before you proceed, make sure to create a System Restore Point and then follow the steps below.

Tap the Win + R keys to open the Run dialog box.
Then type “regedit” in the field and hit Enter or click OK to open the Registry Editor.
Next, go to this registry key: ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList
Once you’ve opened the registry key, you should see a list of all the user profiles on your computer. Now click on each S-1-5 folder and look for the “ProfileImagePath” entry and double-click on it to check which user account it is related to. You will see a path like “CUsersACK” where “ACK” is the username.
You should know which among the user account is corrupted. Just look for a key named “RefCount” and change its Value data to “0” and click OK. And if it isn’t available, simply right-click on the right pane and create it.
After that, double click on the key named “State” and make sure that the Value data is “0” and click OK.
Exit the Registry Editor and restart your computer to apply the changes made.

Option 3 – Try running the System File Checker

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files that might be the cause why your screen is stuck at “Preparing Windows”. To run the SFC command, follow the steps given below.

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

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:

Windows Resource Protection did not find any integrity violations.
Windows Resource Protection found corrupt files and successfully repaired them.
Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Try to repair hard disk errors using the Chkdsk utility

You can also run the Chkdsk utility to resolve the problem. 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 commands listed below, and don’t forget to hit Enter right after you type in each one of them.
chkntfs /t
chkntfs /t:10

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