How to Remove a Virus from Your Computer (Complete Guide)

Suspicious popups, slow performance, or strange behavior? Here is how to detect and remove malware safely.

HelpByExperts malware removal and computer virus protection guide

Need help with this? Chat with a verified expert network.

Get personalized advice for your specific situation — just $1.

Prefer to see how it works first? Visit our Tech Support help page for pricing, expert credentials, and answers to common questions.

In this article

1. Signs Your Computer Is Infected 2. Step 1: Disconnect from the Internet 3. Step 2: Boot into Safe Mode 4. Step 3: Run a Full Malware Scan 5. Prevention: How to Stay Safe

Signs Your Computer Is Infected

Unexpected popups, browser homepage changed, new toolbars, computer running slow, programs opening on their own, files disappearing or being encrypted, webcam light turning on unexpectedly.

Step 1: Disconnect from the Internet

This prevents malware from sending your data to attackers or downloading additional malicious payloads.

Step 2: Boot into Safe Mode

On Windows 10/11: hold Shift and click Restart, then Troubleshoot, Advanced Options, Startup Settings, Enable Safe Mode with Networking.

Step 3: Run a Full Malware Scan

Use Malwarebytes (free version) — it catches things Windows Defender misses. Run a full scan, not a quick scan. Quarantine and remove everything it finds.

Prevention: How to Stay Safe

Keep everything updated. Never click links in unexpected emails. Download software only from official sources. Use an ad blocker. Enable two-factor authentication.