Laptops are highly vulnerable to viruses, especially when connected to the internet or external devices such as USB drives. Experts warn that ignoring early signs of infection can lead to severe system damage or data loss. Here are four key indicators that your laptop may have been compromised—and what steps you should take to fix it.

1. Frequent System Crashes

If your laptop keeps crashing or freezing without any clear reason, it could be an indication of a virus or malware. Such malicious programs often make apps non-responsive and force repeated system crashes.

2. Sudden Pop-Up Ads

Seeing pop-up ads on your laptop—even when not connected to the internet—is a major red flag. Clicking on these ads can expose your data to further threats or trigger more malware downloads.

3. Noticeabl

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