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What to Do if You Think Your Computer Has a Virus

By Jason Bingham  ·  August 3, 2026

Jason has spent 16 years helping everyday people get comfortable with technology.

What to Do if You Think Your Computer Has a Virus

What to Do if You Think Your Computer Has a Virus

Many of us have experienced that unsettling moment when our computer starts behaving oddly, leading us to wonder if it might have a virus. Understanding what to do can be frustrating, especially if you’re still getting used to how computers work. Don’t worry; you’re not alone in feeling this way. Let’s walk through what you can do to address this concern calmly and confidently.

Recognize the Signs

Before we delve into action steps, it’s important to recognize common signs that might indicate a virus. These include your computer running slowly, unexpected pop-up advertisements, or strange error messages. If you notice these behaviors, it’s reasonable to suspect that something isn’t right.

Step-by-Step Instructions

If you think your computer is infected, follow these steps to tackle the situation head-on:

  1. Stay Calm: The first step is to take a deep breath. Panicking will not help you. Remember, many issues can be resolved without too much trouble.
  2. Disconnect from the Internet: Unplug your computer from the internet or turn off your Wi-Fi. This prevents the virus from spreading or causing more damage while you figure things out.
  3. Run a Virus Scan: Most computers come with antivirus software. If you have one installed, open the program and look for an option that says “Scan” or “Run a Scan.” If you don’t have antivirus software, consider downloading a reputable one, such as Avast or Norton. Look for “Free Virus Scan” options, which are safe and easy to use.
  4. Follow the Instructions: After the scan is complete, your antivirus software will show you a list of any issues it found. Follow the prompts to remove or quarantine any viruses it detects.
  5. Update Your Software: Ensure your operating system and all programs are up to date. Software updates often include important security patches. Look for a “Updates” option in your computer settings.
  6. Change Your Passwords: If you suspect that your computer has been compromised, it’s wise to change your passwords for important accounts, such as email and online banking, especially after you resolve the issue.
  7. Seek Professional Help: If the virus persists even after running a scan, consider consulting a professional. A technician may be able to remove it completely.

Practical Tips

Here are some tips to help prevent future infections and keep your computer running smoothly:

  • Install a good antivirus software and keep it updated.
  • Be cautious when clicking on links or downloading attachments from unknown sources.
  • Regularly back up your important files to an external hard drive or cloud storage.

Common Mistakes to Avoid

It’s easy to make mistakes when dealing with potential viruses. Here are a couple to be mindful of:

  • Don’t ignore warning signs. If your computer starts acting strangely, it’s better to investigate sooner rather than later.
  • Avoid opening suspicious emails or clicking on unexpected pop-up ads; these can often be disguises for harm.

In Conclusion

Dealing with a potential virus on your computer can be daunting, but remember that it’s a common issue that can often be resolved. By following these steps and being proactive with your computer care, you are taking significant strides toward becoming more comfortable and confident in using technology. Pat yourself on the back for learning and growing, and know that you can always reach out for help when needed. Keep up the great work!

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