Hi guys,
I have a problem with my computer. I had turned it off and a few hours later, I went back to turn it back on. When I pressed the start up BUTTON, my computer started up for about 3-4 seconds and then just died right after. The fans were working, but soon after, the computer died out. There was no beeps.

FIRST I tried unplugging everything and then plugged everything back in, but sadly it still had the same problem. I tried TAKING out my video card, RAM, and sound cards, but it still did the same thing. I, then, bought a power supply and it was the same problem. I returned that and bought a new motherboard. Did the same thing again. My last guess is that it might be the CPU. Would the CPU cause the computer to load up for a few seconds and then shut right off? yes I had the same problem with my computer a ways back, the clips BROKE off and the fan wasnt all the WAY on the cpu and it over heated, when I replaced the module it did the same, found out the cpu cooked and had to get it replaced, check to make sure that you have a pad or grease under the fan and on the cpu, make sure its tight.I'd vote for failed power supply.