[H] Dead PC, Help...

[swzaske]

I just installed a Phenom II X2 545 in my game box that I bought from 
Ebay and it was working fine until I made a change in the BIOS setting 
ACC to Hybrid and Auto then rebooted and it just died. Am I right to 
assume that if the CPU, memory, or video card died it would still power 
up just not POST? I strongly suspect my PSU because it has a flaky 
on/off switch so I just leave it on all the time and use the front power 
button to shut down if necessary. I'm kinda bummed right now...