AArrgg.. ok where do I start.. about a year ago my computer just stoped working. It would not boot up at all. So I got a new power supply...that did not fix it, got new memory..nope.. got new MOTHERBOARD nope..got new CPU that doesnt do it either! After trying to fix this I pretty much give up on it. So here I am today. I want to fix this damn thing. I just got a new full-tower case, which came with a new power switch. Ok so I hook up my new Intel motherboard and 3.2ghz/800mhz P4, connect the PS to it put video card in and a memory stick.. press power button... NOTHING! The only thing I still have from the orignal computer that kicked the can is the ATI 9700 video card. Do I need this to boot up the computer? -I tried moving the power switch around, I have it in the right pins. -I tried turning it on without any ram (it should boot up but just beep twice right?) -I tried booting it up with no video card -I tried booting it up with 2 different MBs and CPUs -LED on MB lights up green Here is the werid thing,(On the old case) I took the PS out of this Dell and hooked it up to the computer im trying to fix, pluged it in and it turned on! But I didnt have any heatsink or fan on the CPU beucase this was about the 10000x I have tried turning it on. So after about 10 sec it shuts off automaticly (CPU got to hot). I let it cool down and put the fan on.. press the power button.. NOTHING! I dont get it.. Sorry if this doesn't make any sense I just put way to much $ on trying to fix this computer, and I'm all out of ideas and I don't want to spend $500 getting some guy to check over each thing and end up telling me i need a new MB or something... Please any ideas/help/tips would be great..