What would keep my computer from comming on?

[Weiser_Cain]

Computer overheated and was totaly unresponsive, wouldn't even turn on to tell me it's broken. So I replaced the MB for starters but that got me nothing but a nicer, unresponsive computer. I'm thinking the CPU is the next culprit to be replaced and I just wanted a little conformation that it being dead would keep my PC from comming on at all as well.

 

[Tigerbiten]

PSU.
I use a couple of case fans and an old hard drive as a load.
Then jumper the green wire to any of the black wire in the ATX connector.
Plug it in and see if the fans spin.
If they do then use a multi meter to read the voltages.
If they don't then its probably a dead power supply.

Luck.........