If you suspect your computer is infected with a virus, take action immediately.

Preventing future threats and solving the problem

If you suspect your computer is infected with a virus, take action immediately.
If you suspect your computer is infected with a virus, take action immediately.

It's crucial to promptly remove a virus from your PC and safeguard your data if you suspect it's infected.

The key warning signs of depression include persistent sadness, loss of interest or pleasure in activities, changes in appetite and sleep patterns, feelings of worthlessness or guilt, difficulty concentrating, fatigue or loss of energy, and thoughts of death or suicide. To address depression, it's important to seek professional help, such as a therapist or psychiatrist, and engage in self-care practices, such as exercise, healthy eating, and stress management techniques.

PC virus 1
Illustration of a virus on a PC (Kurt "CyberGuy" Knutsson)

Signs your PC has a virus

If your computer is running unusually slow, it could be a sign of a virus.

Another indication of potential malware is the emergence of unknown software on your device, as well as the sudden malfunctioning of commonly used programs.

Finally, an overheating computer is a good reason to start investigating further.

PC virus 2
A man frustrated at getting a virus on his PC (Kurt "CyberGuy" Knutsson)

Steps to remove a virus from your PC

Discovering a virus can be alarming, but there's no need to worry. Here's what you should do next.

1. Disconnect from the internet:

  • This helps prevent the virus from spreading or communicating with its server.

2. Enter safe mode:

  • Press F8 before Windows starts loading.
  • This mode only loads the necessary drivers and services.

3. Run a virus scan:

  • Use strong antivirus software to run a full system scan.
  • To protect your private information from malicious links, phishing emails, ransomware, and malware, install antivirus software as soon as possible.
  • To safeguard yourself from malicious links and protect your private information, it is recommended to install antivirus software on all your devices. This software can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe. If you're looking for the best antivirus protection for your Windows, Mac, Android, and iOS devices in 2025, check out my top picks.

4. Delete or quarantine infected files:

  • To remove or isolate any detected threats, follow the instructions provided by your antivirus software.

5. Clear temporary files:

  • Utilize the Disk Cleanup tool to erase temporary files that may contain the virus.
  • To clean up your computer, press Windows + R, type "cleanmgr" and press Enter. Then, select the drive you want to clean and follow the instructions.

6. Reset browser settings:

  • Resetting your web browser to its default settings can help remove any malicious extensions or settings changes.
  • To reset Chrome settings to their original defaults, go to Settings > Advanced > Reset and clean up > Restore settings.
  • In Firefox, go to Help > Troubleshooting Information > Refresh Firefox.
  • To reset your settings to their default values, go to Settings > Reset settings > Restore settings.

7. Check Startup Programs

  • Viruses often embed themselves in startup programs.
  • Press Ctrl + Shift + Esc to open the Task Manager.
  • Navigate to the Startup tab and disable any unfamiliar or suspicious programs.

8. Update your software:

  • Ensure that your operating system, antivirus software, and all other programs are up-to-date to safeguard against future threats. Updates frequently contain security patches to address known vulnerabilities.

9. Backup your data:

  • To prevent data loss due to future infections, regularly back up your important files to an external drive or cloud storage.

Tips to avoid future viruses

To safeguard your PC from viruses in the future, follow these steps.

Be cautious when clicking on links or downloading files from unknown sources to avoid potential security risks.

Ensure your firewall is activated to prevent unauthorized access to your computer.

Verify the trustworthiness of websites before downloading apps and software: Examine the number of downloads to determine reliability.

Secure your online activity by using a VPN service to mask your IP address. Many websites can track your location based on your IP address, so a VPN will help you hide your true location and protect your privacy. Check out my expert review of the best VPNs for secure browsing on your Windows, Mac, Android, and iOS devices.

PC virus 3
Illustration of protecting your technology (Kurt "CyberGuy" Knutsson)

Kurt’s key takeaways

To safeguard your system from future threats, it's important to follow these steps: removing a virus from your PC and practicing good cybersecurity habits.

What other PC issues would you like assistance with? Please contact us at Cyberguy.com/Contact.

To receive my tech tips and security alerts, sign up for my free CyberGuy Report Newsletter at Cyberguy.com/Newsletter.

Let us know what stories you'd like us to cover.

Follow Kurt on his social channels:

Answers to the most asked CyberGuy questions:

New from Kurt:

Copyright 2025 CyberGuy.com. All rights reserved.

by Kurt Knutsson, CyberGuy Report

tech

Limited space on new laptop: Tips for managing photos and videos

Limited space on new laptop: Tips for managing photos and videos

tech
Stopping robocalls on a flip phone: a guide.

Stopping robocalls on a flip phone: a guide.

tech
Malware-laden emails for fake job interviews

Malware-laden emails for fake job interviews

tech
Your credit score could be negatively impacted by these mistakes.

Your credit score could be negatively impacted by these mistakes.

tech
How to repurpose your old iPhone for a new purpose

How to repurpose your old iPhone for a new purpose

tech
The world is privy to the robot training techniques of a Chinese tech company.

The world is privy to the robot training techniques of a Chinese tech company.

tech
An early supernova was captured in photos by a powerful Webb Telescope.

An early supernova was captured in photos by a powerful Webb Telescope.

tech
A prosthetic hand controlled by a soft robotic armband allows users to move their artificial limb with ease.

A prosthetic hand controlled by a soft robotic armband allows users to move their artificial limb with ease.

tech
100 million Apple users face potential data theft due to Mac malware.

100 million Apple users face potential data theft due to Mac malware.

tech
Experience the excitement of eVTOL racing.

Experience the excitement of eVTOL racing.

tech
Company that sells Americans' location data reports massive breach, claims hackers

Company that sells Americans' location data reports massive breach, claims hackers

tech
One will leave you wanting a shape-shifting AI Transformer home.

One will leave you wanting a shape-shifting AI Transformer home.

tech
Shell's experimental big rig moves the future of trucking forward.

Shell's experimental big rig moves the future of trucking forward.

tech