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 ...

Ive been having a wierd problem with my CPU fan, when I start my computer up it hums rather loudly for about a min then the loud humming subsides. Now recently it will periodically make a diff higher ...

Some users have complained that their Windows laptop fan keeps running constantly. Even if the laptop is idle, the laptop fan starts running continuously at full speed or high speed with loud noise.