so last week I decided to thoroughly clean out my comp. I took the whole thing apart and blew out enough dust to start my own dust bunny army. In doing so I accidently bent 2 pins on the cpu(P4 2.6/512/533). So i went i went online and got another cpu(P4 HT 3.00/1mb/800)got it today looked good had a littl grease on 2 of the pins blew it off cleaned it up(some residue is still there). so I put it in put the heatsink on and fan start pluggung everything back up and started it, nothing. I got the normal 2 lights on the front, the green one inside and nothing on the back(the 4 leds). there is no beeps nothing, no screen, the hard drives, dvd and cd drives do nothing. the only thing that turn on are the 2 fans. so doing a little searching I came across a rightup on this forum on how to diagnose if the psu is working properly, jumped 14 and 15(green and black) plug it up and hello cd, dvd and both hard drives start up. so does this sound like a mobo problem to you or something else? maybe cpu isn't compatible with mobo? its not that different from the original. before doing this I did reformat the main drive to clean out stupid ****, b/c it was getting really bad. but it still worked.