Heres how it started out

I left my computer on last night went to school and got home around 3 PM. turned off my pc. turned it back on a few hours later to listen to music. 30 mins later my computer just retarts on its own. ok? not normal. left it off for 30min. turned it back on and now my comp starts freezing up. try to re install windows... now its shutting off! ouch... this really hurts as I have things to turn in for school and whatnot.

I try to get to the BIOS by repidly pressing F2 and some screen poped up [ with the specs etc] and at the bottom it said that the system was shut do due to overheating etc. So i bought some new thermal compound paste and removed the old one. [alcohol with clog]. I reset the BIOs [ by switching the BIOs thingy located around the bottom of the memory slots ] and tried to reinstall them with my intel CD. When I turn on my pc now my monitor would not display anything nor would my mouse or keyboard light up.

Specs:
Intel 3Ghz Socket T
1 G RAM
2x 200GB Hard Drives
Audigy Sound Card

Thanks for your help,

Ed

ps. i do remember a long wierd beep before the signal dropped it was like beeeeeeeeeeeeeeeep im not sure if it followed some rapid beeps after. i do believe i was holdin down the enter key