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March 8, 2026

Top Signs Your PC Has a Virus

Viruses and malware are more sophisticated than ever. Sometimes the signs are obvious, but often they hide in plain sight. Here are the top warning signs that your PC may be infected.

Unusual Slowness — If your computer suddenly becomes sluggish without any obvious reason (like running heavy software), malware could be using your system resources in the background.

Pop-ups and Strange Ads — Seeing pop-up ads on your desktop or in your browser even when you're not on an ad-heavy site? That's a classic sign of adware or a browser hijacker.

Programs Crashing or Not Opening — Malware can corrupt system files, causing programs to crash unexpectedly or refuse to open altogether.

Unknown Programs Installed — Check your installed programs list. If you see software you didn't install, it may have been bundled with malware.

Your Antivirus Is Disabled — Some malware specifically targets antivirus software, disabling it so it can operate freely. If your antivirus won't turn on, take it seriously.

High Network Activity — If your internet seems slow or your network activity light is constantly blinking even when you're not doing anything online, malware could be sending data from your computer.

Don't ignore these signs. The longer malware stays on your system, the more damage it can do — from stealing passwords to encrypting your files for ransom. Bring your PC to Dark Gold Computer Solutions for a professional virus removal.