Ok, so I got this computer that was already not booting. I put a diagnostics card on it and it showed NO-C, which of course means no cpu. So I buy another cpu to go in it and try it again, again it won't boot and shows NO-C. So I decide to buy another motherboard thinking that it was maybe a short in the mobo. Install it and again no boot and show NO-C still. My only guess is now that it is the power supply but wanted to get some else's opinion on it before I decide to put out anymore money for a part I might not need. Thanks in advanced for the help.