Well it turned out to be the mobo. Thanks for all your help guys.

By the way the machine is custom. A friend made it. P4 2.8 GHZ, 512MB ram, 128MB Ati Radeon video card, 120GB Maxtor HHD. The mobo is an MSI. It ws built in 2004. If yall need any other specs...

All the fans are clean. I deleted the partition, formated, and re installed windows. To my surprise it froze during the windows installation lol. So.. Its the hard drive right??

I also hooked up the hard drive to a different PC and scanned it with SeaTools. I ran all 4 tests and all 4 got about 1% to the end and aborted. I will try what you said and Ill repost.
Thank You

well I did a surface scan of the HD and it came back ok. So i tried 2 different hard drives, 1 said no operating system (it has one) the other just a blank screen with a flashing cursor. I also...

Yes that is correct

OK my PC started freezing I scanned viruses and spy-ware. I cleaned out all the temp files, Internet files and so on. It still kept freezing so i said f it and i reformatted and reinstalled...

It very well could be your motherboard. Ill check around to see what I can find out. Motherboards arent the cheapest to buy especially from HP.

Try resetting your BIOS. On the motherboard there is a small watch battery. Remove this battery along with the power cable from the power supply. Hold down the power button to fully discharge the...

Did it beep before you had the problem?

Reinstall your Operating System

When you first turn your PC on, do you get any strange beeps that werent there before you had the problem?