RELATED: Beginner Geek: How to Reinstall Windows on Your Computer This takes more and more time, and you’ll never be 100 percent sure everything is gone, and your system is completely secure.įix Any Infection By Reinstalling Windows To mitigate this problem, you might want to run multiple different antivirus programs, scanning your system with those multiple engines to get a second, third, and maybe even fourth opinions. If your system is infected and the anti-malware software found and removed an infection - or, even more worryingly, multiple infections - there’s no guarantee your system is completely safe. This scan process takes some time, and it isn’t guaranteed to be 100 percent successful. To really clean up a system, you’ll want to run an antivirus boot disc to scan your Windows system for malware and try to remove it all - or at least reboot into safe mode. RELATED: How to Use An Antivirus Boot Disc or USB Drive to Ensure Your Computer is CleanĪntivirus utilities aren’t perfect. If you find your computer is actually infected by a piece of malware, you don’t know if that’s the only piece of malware that’s infected your computer.Īntivirus Utilities Aren’t Perfect, and Can Take Time Worse yet, malware can function as a Trojan horse, opening the floodgates to additional malware that it will download and install from the Internet.

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