HELP! Computer Freezing Even after Re Format!!

Ok Well i was working on my friends PC and he somehow got a terrible virus on there so he wanted me to re format. So i did After the Re format (i did the long re format) i got windows XP Home on there and when i went to download anything like Drivers,firefox,games it would automaticly freeze. i did 3 complete reformats in 1 day to try and fix the problem. th 3 time i reformatted it i got all the windows updates downloaded and installed first then when i went to download the drivers BAM Froze again. i even downclocked his processor to try and fix this problem but it didnt help.

Dose anyonw know how to fix this problem? Or maby the hard Drive is dying? Any advice would help alot.

If the hard-drive was dying, trust me you'd hear it pretty loud and clear.

Does it freeze completely or BSOD?

same thing happend to me once, my mobo got f**ked up and needed to be replaced.

you may wanna check it...

This is clearly a sign of bad memory.i had the same problem that the pc would randomly freeze so i f you have two sticks of ram one of them or both is defective just test with memtest download and burn on a bootable cd here: http://www.memtest.org/#downiso the latest version is 1.70 good luck :) .Ascardon