There has been a loud whining noise coming from my computer for a while now. I <I>think</I> it is coming from the fan, but I am not sure. It could also be the power supply.<P>I want to test it somehow ...

Struggling with MacBook overheating, fast battery drain, or loud fan noise? Try 17 practical fixes to improve performance, reduce heat, and extend battery life.

Don't worry—this doesn't necessarily mean it's about to die. Here are some things you can check Reviewed by Chris Selph Computer buzzing sounds are usually harmless and easy to fix, but there's always ...