We recently have a computer with 3 out of 5 HD going bad (excessive bad sectors) within 1 week. This got me to start thinking that maybe it's the power supply. What are some warning signs / tricks to tell when the power supply is about to go? before it completely stop working.
I read on another thread on SF about power supply tester. It looks helpful if the PSU has a faulty rail, but will those catch intermittent errors that might happen before a supply goes bad?