1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.

A computer that refuses to start is one of the most frustrating technical problems, whether it's a desktop PC or a laptop. This issue can arise from simple power interruptions, loose connections, or ...

An issue with noisy power supplies that we reported more than a month ago is continuing to generate numerous complaints on Apple's discussion boards, with little response acknowledgement from Apple's ...