How do you know if a laptop has a virus? Be careful if you see these 4 signs; Otherwise the data will be lost
Samira Vishwas December 19, 2025 04:24 AM
  • If a virus enters the laptop, some signs are mainly visible.
  • These signals are warning you.
  • Timely removal of virus from laptop can save it.

Viruses are common in laptops, especially when you use the Internet or transfer data through USB. But if you don’t pay attention in time, it can damage your important data. We tell you how to know if your system has a virus or not and how to prevent it. So let’s know what can be done if there is a virus in the laptop.

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Laptop crashes frequently

If your laptop keeps crashing frequently for no apparent reason or applications stop responding, a virus or malware might have entered the system. Such viruses corrupt system files and force the laptop to restart multiple times.

Pop-up ads appear even when there is no internet

If pop-up ads keep appearing on the screen even when your system is not connected to the Internet, it is a clear indication that the laptop has a virus. Clicking on such ads can be dangerous, as they can corrupt your data or download more malware.

Sudden slow performance

If the laptop suddenly slows down, programs take time to open, files are slow to load, or the CPU-RAM usage suddenly increases to 70 to 80%, it can also be a sign of a virus. Malware affects performance by abusing system resources.

Sudden changes in files and settings

If your important files start disappearing, file names change or unknown files and folders appear in the system, understand that a dangerous virus is working in the background. Such viruses can also make unwanted changes to settings.

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How to remove virus from laptop?

  • If the system does not have an antivirus installed, first purchase the software from a reputable company.
  • After installation, perform a full system scan. After the scan is complete, the software
  • It will show you how to remove the virus.
    Remember, delay or carelessness in virus removal can put your important data at risk.
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