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5 Signs Your Computer May Have a Virus

June 20, 2026

Malware doesn't always announce itself. Often the warning signs are subtle at first and easy to brush off. Catching them early can save you data, money, and a lot of frustration.

1. Everything suddenly feels slow

If your computer was running fine and then slowed to a crawl — especially right after startup — background malicious software may be eating up your resources.

2. Unexpected pop-ups and ads

Pop-ups that appear even when your browser is closed, or ads that show up in places they never did before, are a classic sign of adware or worse.

3. Your browser homepage changed on its own

If your search engine or homepage was switched without your doing it, a browser hijacker may be installed.

4. Programs crash or won't open

Frequent crashes, missing files, or programs that refuse to launch can all be symptoms of an infection interfering with your system.

5. Friends get strange messages from you

If contacts report odd emails or messages they say came from you, malware may be using your accounts to spread itself.

What to do next

Disconnect from the internet, avoid logging into sensitive accounts, and have the machine looked at. We can identify and thoroughly remove viruses, malware, and ransomware to restore and secure your system — reach out any time.