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Remove ‘Your PC performance might be poor’ virus (Virus Removal Guide) - Dec 2019 update

removal by Olivia Morelli - - | Type: Adware

Your PC performance might be poor is a scam that might trick users to install malware on their computers

Your PC performance might be poor
Your PC performance might be poor is a fake alert that users may encounter by either visiting a malicious website or if their machines are infected with adware

“Your PC performance might be poor” is a misleading notification that may show up on your computer during web browsing sessions on Google Chrome, Mozilla Firefox, Safari, Internet Explorer, or any other web browsers at any time. Just like many other online scams, this fake alert tries to catch users off-guard, trying to imitate a legitimate message that users might have seen previously. “Your PC performance might be poor” scam claims the following:

Your PC performance might be poor
Click on Yes button below to fix windows errors now

Because the “Your PC performance might be poor” pop-up is presented in a pop-up that looks like it is coming from a browser, many inexperienced users might follow the provided instructions and install potentially unwanted programs[1] or malware on their computers. Thus, never believe “Your PC performance might be poor” message, as you may harm your online safety and infect your computer with malicious software.

Name “Your PC performance might be poor”
Type Online scam, fake alert
Causes  The fake pop-up might show up once a malicious website is visited or be triggered by secretly installed adware/malware, as well as background scripts 
Symptoms  The pop-up message shows up seemingly out of nowhere and claims that computer performance is poor. If the PC is infected with adware, users may also see redirects to suspicious sites, sponsored links in search results, web browser changes (i.e., homepage and search engine), intrusive ads, and experience other symptoms
Main dangers  Installation of other potentially unwanted programs or malware, sensitive information disclosure to unknown parties 
Removal  Scan the device with anti-malware software or check the instructions below 
Recovery & optimization If the machine was infected with adware or malware, we recommend scanning it with Reimage Reimage Cleaner for virus damage fix

There are several reasons why you might be seeing “Your PC performance might be poor” alert. First of all, the message might be triggered by you stumbling upon a malicious website accidentally, although a malicious JavaScript can also be the cause of it. Additionally, the redirects to sites that show “Your PC performance might be poor” scam can also be a sign of adware infection.

You should never click “Yes” and especially not download/install anything suggested by the malicious “Your PC performance might be poor” pop-up. In case you do, you might end up with malware like ransomware[2] or a Trojan on your machine, which might render your personal files useless or send sensitive information (such as credit card details) directly to cybercriminals without your knowledge. The worst part is that the latter might hide inside the system for a prolonged period of time, and you will not know that malicious activity is taking place.

“Your PC performance might be poor” is created by cybercriminals who are willing to monetize by tricking and harming innocent users. To make the scam more believable, crooks often employ social engineering skills – an art of manipulating users into believing something that is not true/real.

Unfortunately, because there are many computer users who are not that familiar with how malware or computers work, scams like “Your PC performance might be poor” are successful more often than not. Fortunately, many users are by now aware of the online dangers, and cybersecurity advisers[3] and security sites often warn about the most popular scams and phishing attempts.

Your PC performance might be poor scam
Your PC performance might be poor is a scam used by cybercrooks in order to make users install adware or malware on their machines

To remove “Your PC performance might be poor” virus, you should not click “No” or the “X” button, but simply leave the page which triggered the fake alert. In case it is impossible to close it, you should call up the Task Manager (or Activity Monitor on macOS) and shut down the process of your browser.

However, “Your PC performance might be poor” removal might not end just there. In case your computer is infected with adware, you will also have to eliminate it to stop the unwanted activity on your machine, which may include the following symptoms:

  • Web browser redirects to scam, phishing, and other suspicious sites;
  • Intrusive ads shown on all visited websites;
  • Search results filled with sponsored links that lead to predetermined sites;
  • Changed homepage, new tab URL, and the search engine;
  • Slow browser response time, etc.

Note that malware might be present on your system too. Thus, if you noticed any suspicious activity even after leaving the malicious site that shows “Your PC performance might be poor” pop-up, you should scan your machine with anti-malware software. Another way to check for potentially unwanted programs is by checking the list of the installed apps as per our instructions below.

If you indeed find PUPs or malware on your system, get rid of it with anti-malware software. Also, for the best results, we also recommend using the PC repair tool Reimage Reimage Cleaner and reset all the installed browsers.

Avoid the installation of potentially unwanted programs 

The constantly occurring data breaches and new malware strains like Djvu ransomware became the epidemic of modern times. Despite the rising awareness of all the internet users, there are many that are unwilling to listen and protect themselves as required in order to prevent computer infections; in other cases, users simply lack basic computer skills to avoid unwanted programs and malware infiltration.

Installing comprehensive security software is not enough, however, and users need to always combine it with good online browsing practices. As previously mentioned, cybercriminals often employ social engineering to make users perform actions they otherwise would not, i.e., installing unwanted software on their machines.

To protect yourself from phishing attacks, never believe pop-ups and warning messages coming from various websites and claiming virus infections, data theft, and threatening with consequences. Only install software from trusted sources (avoid torrents) and always pick Advanced/Custom settings during the installation process of freeware/shareware to get rid of all the optional components before they manage to enter your PC.

Your PC performance might be poor ads
Your PC performance might be poor ads might also be embedded within the homepage of a browser hijacker

“Your PC performance might be poor” removal may be as simple as closing down the malicious site in some cases

As mentioned above, “Your PC performance might be poor” removal might consist of simply closing down the tab of the malicious web page that you came across. It is absolutely vital not to download anything offered by the fake alert or to click the “Yes” button, as it may trigger the installation of malware in the background. In the best-case scenario, you might end up with bloatware[4] programs like Full System Care, Pro PC Cleaner, and others – these can also harm the computer by performing inadequate changes to it.

All in all, to remove “Your PC performance might be poor” virus along with anything that might be installed on your device, scan it with security software. If the infection is triggered by adware, you might be lucky and eliminate it manually by using our instructions below. Additionally, you should reset all the installed browsers.

You may remove virus damage with a help of Reimage Reimage Cleaner . SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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What to do if failed?
If you failed to remove virus damage using Reimage Reimage Cleaner, submit a question to our support team and provide as much details as possible.
Reimage Reimage Cleaner has a free limited scanner. Reimage Reimage Cleaner offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage Cleaner, try running Combo Cleaner.

To remove ‘Your PC performance might be poor’ virus, follow these steps:

Get rid of ‘Your PC performance might be poor’ from Windows systems

Get rid of potentially unwanted programs from Windows systems:

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). Click 'Start -> Control Panel -> Programs and Features' (if you are 'Windows XP' user, click on 'Add/Remove Programs').
  2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program. If you are 'Windows 10 / Windows 8' user, then right-click in the lower left corner of the screen. Once 'Quick Access Menu' shows up, select 'Control Panel' and 'Uninstall a Program'.
  3. Uninstall ‘Your PC performance might be poor’ and related programs
    Here, look for ‘Your PC performance might be poor’ or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'

Remove ‘Your PC performance might be poor’ from Mac OS X system

  1. If you are using OS X, click Go button at the top left of the screen and select Applications. Cick 'Go' and select 'Applications'
  2. Wait until you see Applications folder and look for ‘Your PC performance might be poor’ or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash. Click on every malicious entry and select 'Move to Trash'

Eliminate ‘Your PC performance might be poor’ from Internet Explorer (IE)

  1. Remove dangerous add-ons
    Open Internet Explorer, click on the Gear icon (IE menu) on the top right corner of the browser and choose Manage Add-ons. Click on menu icon and select 'Manage add-ons'
  2. You will see a Manage Add-ons window. Here, look for ‘Your PC performance might be poor’ and other suspicious plugins. Disable these entries by clicking Disable: Right click on each of malicious entries and select 'Disable'
  3. Change your homepage if it was altered by virus:
    Click on the gear icon (menu) on the top right corner of the browser and select Internet Options. Stay in General tab.
  4. Here, remove malicious URL and enter preferable domain name. Click Apply to save changes. Delete malicious URL, enter your desired domain name and click 'Apply' to save changes
  5. Reset Internet Explorer
    Click on the gear icon (menu) again and select Internet options. Go to Advanced tab.
  6. Here, select Reset.
  7. When in the new window, check Delete personal settings and select Reset again to complete ‘Your PC performance might be poor’ removal. Go to 'Advanced' tab and click on 'Reset' button. Now select 'Delete personal settings' and click on 'Reset' button again

Delete ‘Your PC performance might be poor’ virus from Microsoft Edge

Reset Microsoft Edge settings (Method 1):

  1. Launch Microsoft Edge app and click More (three dots at the top right corner of the screen).
  2. Click Settings to open more options.
  3. Once Settings window shows up, click Choose what to clear button under Clear browsing data option. Go to Settings and select 'Choose what to clear'
  4. Here, select all what you want to remove and click Clear. Select 'Clear' button
  5. Now you should right-click on the Start button (Windows logo). Here, select Task Manager. Open the start menu and select 'Task Manager'
  6. When in Processes tab, search for Microsoft Edge.
  7. Right-click on it and choose Go to details option. If can’t see Go to details option, click More details and repeat previous steps. Right-click 'Microsoft Edge' and select 'Go to details' Select 'More details' if 'Go to details' option fails to show up
  8. When Details tab shows up, find every entry with Microsoft Edge name in it. Right click on each of them and select End Task to end these entries. Find Microsoft Edge entries and select 'End Task'

Resetting Microsoft Edge browser (Method 2):

If Method 1 failed to help you, you need to use an advanced Edge reset method.

  1. Note: you need to backup your data before using this method.
  2. Find this folder on your computer: C:\Users\%username%\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  3. Select every entry which is saved on it and right click with your mouse. Then Delete option. Go to Microsoft Edge folder on your computer, right-click every entry and click 'Delete'
  4. Click the Start button (Windows logo) and type in window power in Search my stuff line.
  5. Right-click the Windows PowerShell entry and choose Run as administrator. Find Windows PowerShell, right-click it and select 'Run as administrator'
  6. Once Administrator: Windows PowerShell window shows up, paste this command line after PS C:\WINDOWS\system32> and press Enter:
    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register $($_.InstallLocation)\AppXManifest.xml -Verbose}
    Copy and paste a required command and press 'Enter'

Once these steps are finished, ‘Your PC performance might be poor’ should be removed from your Microsoft Edge browser.

Erase ‘Your PC performance might be poor’ from Mozilla Firefox (FF)

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select ‘Your PC performance might be poor’ and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  4. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete ‘Your PC performance might be poor’ removal. Click on 'Reset Firefox' button for a couple of times

Uninstall ‘Your PC performance might be poor’ from Google Chrome

Reset Google Chrome once you remove all the PUPs from your machine:

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select ‘Your PC performance might be poor’ and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  5. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  6. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  7. Click Reset to confirm this action and complete ‘Your PC performance might be poor’ removal. Click on 'Reset' button to complete your removal

Get rid of ‘Your PC performance might be poor’ from Safari

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for ‘Your PC performance might be poor’ or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  4. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete ‘Your PC performance might be poor’ removal process. Select all options and click on 'Reset' button

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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