“Warning: System may have found viruses on your computer” pop-up is a small program that is integrated into the system to be able to promote computer assistance service via phone number 1-855-807-4805. You may get this program by downloading and installing shareware applications or fake software update. By packing “Warning: System may have found viruses on your computer” applet into other software, developers are hoping to spread the service fast and easy. Unknown to user, program they have downloaded and installed will somehow corrupt the system by dropping an adware. So far, “Warning: System may have found viruses on your computer” is deemed as an adware and not a computer virus.
When “Warning: System may have found viruses on your computer” is installed, it will pop-up from the system tray at any given time, without the need be executed. The adware promotes mainly their “computer support” service, followed by a series of tools and programs, which it calls essential.
Aside from system tray, “Warning: System may have found viruses on your computer” also redirects all open browsers to various web sites showing the following messages:
Warning: System may have found viruses on your computer.
System May Have Found (2) Malicious Viruses: Rootkit.Sirefef.Spy and Trojan.FakeAV-Download. Your Personal & Financial Information MAY NOT BE SAFE.
For Help Removing Viruses, Call Tech Support Online Right Away: 1-855-807-4805
“Warning: System may have found viruses on your computer” pop-up may deceive you with false findings about computer errors or virus presence. Keep in mind that this is how the program can force you to use their online support assistance. The same method attempts to entice you in buying endorsed programs.
If you are seeing “Warning: System may have found viruses on your computer” on the computer, it is still best to remove the adware using add/remove program of Windows. If not fully removed, utilize some tools to uninstall “Warning: System may have found viruses on your computer” adware completely.
“Warning: System may have found viruses on your computer” Removal Procedure
Stage 1: Scan the Computer with Sophos Virus Removal Tool
This rootkit and virus removal tool is free and easy to use. It scans, detects and removes any rootkit, malware as well as threat like “Warning: System may have found viruses on your computer” home page hijacker. The tool is powerful enough to find malicious items that are hidden on the computer.
1. Download Sophos Virus Removal Tool from the link below. Save the file to your Desktop so that we can access the file easily.
Sophos Virus Removal Tool Download Link
2. After downloading, navigate to the file location and double-click it. This will start the installation procedure. User Account Control will prompt if you want to run the program, click Yes to continue.
3. On initial launch of the program, it will display a welcome screen as shown in the image below. Click Next to start the installation procedure.
4. Next, you need to accept the license agreement before Sophos Virus Removal Tool can be installed onto the computer. Choose ‘I accept the terms in the license agreement’. Then, click Next button.
5. On the next prompts, please click appropriate button to proceed. At the end of the installation process, it will display InstallShield Wizard Completed. Just leave the Launch Sophos Virus Removal Tool with a check mark. Then, click Finish.
6. The tool will download necessary updates so Internet connection is required at this point. Lastly, Sophos Virus Removal Tool displays the welcome screen.
7. Click on Start Scanning button to begin checking the system for presence of rootkit and virus. The tool reveals items that were found linked to “Warning: System may have found viruses on your computer”. It also detects and removes other malicious files.
Stage 2: Scan and Delete Adware with AdwCleaner
1. Download the tool called AdwCleaner from the location stated below.
Click here to download AdwCleaner (this will open a new window)
2. Once you have completed the download, please close all running programs on the computer.
3. Locate the file and double-click on adwcleaner_Ver.exe to start running the tool. Then, click on Scan button.
4. It searches for presence of harmful programs, plug-ins, add-ons, or any data that were found malicious and linked to “Warning: System may have found viruses on your computer” adware. You need to Clean all items detected by this tool.
5. Once scan is done, the tool may need to reboot your computer to finalize the cleaning process.
6. After reboot, AdwCleaner will display the log file of the recent scan.
Stage 3: Remove Add-on and Cleanup the Browser
After the previous scans, you may have deleted “Warning: System may have found viruses on your computer” items from the affected browser. This next step will ensure that no more module of adware will be left on the browser. This free tool scans and checks the browser for unwanted add-on and extension, and if found, Avast Browser Cleanup will give you a report and suggestion.
1. Download this free tool and save it to your desktop.
Avast Browser Cleanup Download Link (This will open in a new window)
2. Please install the program. Start the process by double-clicking on the executable file avast-browser-cleanup-sfx.exe.
3. When run, Avast Browser Cleanup performs a test on the browser. If unwanted entries were found, it will display a button ‘Remove all add-ons listed below and cleanup browser.’ You may remove all or delete one entry at a time.
4. Avast Browser Cleanup will confirm before it permanently deletes the add-on. Please click Yes to proceed with the removal of “Warning: System may have found viruses on your computer” on the affected browser.
Option: Alternative Method to Clean Up Internet Browser from “Warning: System may have found viruses on your computer” Adware
Cleaning your internet browser from clutter and unwanted add-on/extension is a must when dealing with “Warning: System may have found viruses on your computer” scam. The procedure below discuss on resetting various browsers to its default state.
Reset Mozilla Firefox to Default
This section describes how to remove unwanted extension from Firefox that may be related to “Warning: System may have found viruses on your computer” adware. This process can fix many browser issues by restoring Firefox to factory settings without affecting your essential information (bookmarks, browsing history, passwords, and Internet cookies) on the browser. If you desire to remove only specific extension, please see manual add-on removal from this link.
1. Navigate to Firefox menu at the top of the browser and access the Help area. Click on Troubleshooting Information.
2. A new tab will appear. You will notice a section on upper-right corner of the screen stating Give Firefox a tuneup. Click the Refresh Firefox button.
3. If confirmation window appears, click Refresh Firefox to continue.
4. Firefox browser will close and start the resetting process. When done, it will display a list of restored data. “Warning: System may have found viruses on your computer” home page hijacker should be gone by now. Click Finish to open a fresh version of Firefox.
Restore Internet Explorer to Default Settings
1. Open Internet Explorer and navigate to top menu. Click Tools, and then Internet Options.
2. Select Advanced tab on Internet Options window.
3. On lower part of the window, under Reset Internet Explorer Settings area, click the Reset button. Please see image for reference.
Your data like favorites, bookmark, and history will remain it the browser. However, this process may delete add-ons by “Warning: System may have found viruses on your computer” and other unknown objects. If you prefer to carry out the procedure manually, please view instructions here.