Reinstall operating system As a last resort to prevent a computer virus, you may want to reinstall your device's operating system (e.g., Windows or macOS). This may result in the loss of important ...

The word 'virus' gets tossed around a lot. Here's what actually counts, what to watch for, and how to stay two clicks ahead ...

Even if you're cautious, there's always a chance that a virus could sneak onto your PC. Sure, Windows does have built-in security to block malware, but all it takes is one wrong click. Maybe it's a ...

Realizing that your computer is infected with a virus can be a heart-stopping moment, but there's no need to panic. Viruses or other malware can have a devastating effect on your PC, slowing its ...

Virus removal tools can be standalone one-time scanners or built into full antivirus software. They scan your system for malicious files and remove them. Standalone tools are great as a second opinion ...

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If you're unsure about a file, you can scan it manually for malware infection, and here's how. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Hopefully, you’ll never have a PC problem to troubleshoot, but ...

Microsoft Defender isn't bad, but it's not enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free antivirus apps we've tested.