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“Critical System Failure” virus. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Malware
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“Critical System Failure” virus – what should you do about it?

If you just got an alert message on your computer screen, stating that your Windows Security has been compromised, and if the pop-up title says “Critical System Failure,” then your computer has been infected by Critical System Failure virus. This virus belongs to Tech Support Scam family, and it is meant to display deceptive and scary warnings on the PC screen. There are many similar viruses created already, such as Fake Windows Activation screen, Productkeyupdate, or “Call certified Microsoft technicians” virus. The particular threat that we are discussing in this article asks the victim to dial 855-616-6772 number to call technical support “experts,” which are simply scammers seeking to deceive inexperienced users and swindle money from them. Typically, scammers seek to achieve at least one of these goals:

  • Talk the victim into buying useless and possibly insecure software;
  • Gain remote access to the computer;
  • Convince the victim to reveal personal data, such as bank card details.

Computer users are advised to ignore such phony alerts and take measures to remove “Critical System Failure” malware from the compromised computer. Luckily, there is a way to block these pop-ups and eliminate the virus from the system without even using a malware removal tool – just enter 642358497351 into the “Response code” box and click Next. That should close the pop-up and remove malware from the computer. If this does not work, it means that you are infected with an updated version of this malware, and it means that using a malware removal tool is the best option to get rid of it. We strongly recommend using Reimage or Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus software. You can find comprehensive instructions on how to start “Critical System Failure” removal procedure below this post. 

Critical System Failure malware displays these pop-ups

How do such viruses spread?

Tech support scammers get surprisingly creative when it comes to distribution of such malicious programs. They seek to integrate their programs into computer systems silently and without causing suspicion to actually make users believe that the computer has been compromised somehow and needs to be fixed immediately. Sadly, unskillful computer users can easily fall for such deceptive messages and call tech support scammers. What is even worse, they might believe what these scammers say and do as they command. We would like to say that all computer users should consider annoying pop-up messages or web pages suspicious if they urge the victim to get in touch with tech support team ASAP.
To avoid installing such deceptive Trojans, users should pay more attention to programs they install and how they install them. We advise users to opt for Custom/Advanced settings when installing new programs rather than leaving Default/Standard mode on. Advanced or Custom settings provide the possibility to see all attached downloads and detach them by removing check marks next to them. What is more, users should stay away from offers to install fake Java updates. These can be encountered while visiting untrustworthy third-party pages, gambling or adult-oriented sites. Such bogus software updates frequently contain hidden files that appear to be malicious. Do not be tricked into installing them unknowingly!

How to remove Critical System Failure malware?

You must remove Critical System Failure virus if you do not want to see these lying messages anymore and, of course, if you wish to protect your system. We strongly advise you to check the entire system for its components and delete all suspicious files at once. Now, this can be a hard task to do, unless you are a professional at programming and can identify malicious files. Otherwise, we do not recommend you to play around with random files and delete the ones that you consider untrustworthy. You might end up deleting essential and necessary files instead of dangerous ones. Therefore, you should go for automatic Critical System Failure removal option and remove it by using one of the following programs:

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall “Critical System Failure” virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.

More information about this program can be found in Reimage review.

More information about this program can be found in Reimage review.

Manual “Critical System Failure” virus Removal Guide:

Remove “Critical System Failure” using Safe Mode with Networking

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

Enter this code in the “Response Code” field – 642358497351 . This should close the pop-up and uninstall the malware. If this does not work, then follow these instructions and scan your system with anti-malware software.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove “Critical System Failure”

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete “Critical System Failure” removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove “Critical System Failure” using System Restore

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of “Critical System Failure”. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that “Critical System Failure” removal is performed successfully.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from “Critical System Failure” and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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  • Riddo

    Installed this virus by accident and removed it using Reimage. It has detected several other threats, so I definitely feel safer now.

  • Harry

    Almost got tricked by this virus tactics…

  • JustinTr

    Its so hard to believe how crafty malware creators are nowadays!

  • Olly

    Thanks! removed this parasite.