Is a browser pop-up offering to fix my slow computer for free a scam?
Yes. Free computer fix pop-ups are tech-support bait — they lead to malware installs, unnecessary software purchases, or remote access fraud.
Last reviewed: 1 June 2026
Explanation
Slow-computer pop-ups appear as browser overlays or as full-screen takeovers that claim your PC is running slowly due to detected problems and offer to fix them for free with a single click. Clicking downloads either a fake optimisation tool containing adware or malware, or directs you to call a number staffed by scammers who charge for unnecessary 'cleaning' and attempt to gain remote access to your machine. Genuine system maintenance tools are available through operating system built-in utilities or reputable software vendors and do not announce themselves through browser pop-ups. If you see such a pop-up, close your browser using Task Manager — do not click anywhere on the pop-up itself.
Common red flags
- Pop-up appears suddenly claiming to detect problems with your computer
- Free fix requires downloading a tool or calling a number
- Pop-up prevents you from closing the browser normally
- Claims to be from Microsoft, Apple, or your antivirus brand
- Sound or voice plays warning you to act immediately
What to do now
- Close the browser using Task Manager (Windows) or Force Quit (Mac)
- Do not click on the pop-up, call any number shown, or download anything
- Run a scan with your existing security software if you are concerned
- Clear your browser cache after closing the tab
Frequently asked questions
Could the pop-up have already installed something before I closed it?
Simply viewing a pop-up is generally safe. Clicking, downloading, or calling the number carries the real risk. Run a security scan if you clicked anywhere on the pop-up.