Speed up your PC with 3 simple Windows tweaks—no restart needed.

Check your computer's power source and cables, as a loose connection might cause restarts. Make sure your computer is not overheating, as this can force it to restart. Updating Windows and ...

A full shutdown can solve a lot of issues.

My first thoughts would be to check your power supply and check you temps. Could be a power supply failing or it could be your fans are clogged with dust and you are reaching higher temps.

Adam Benjamin has helped people navigate complex problems for the past decade. The former digital services editor for Reviews.com, Adam now leads CNET's services and software team and contributes to ...