can you run a disk check at all on your computer. actually, can you boot into safe mode or just at least get into the command prompt at all on your computer? if you can get in the DOS interface, make sure you're in the c directory/drive first of all. if not, type cd c:\ and that wil put you in that directory or where ever your OS is located. once there, just type chkdsk and let it do its thing. this will show you if a: there are bad sectors and if they are bad, it will try to repair them and b: if can't or wont run at all, then your HD is just fucked and you do need to buy a new one. let me know if you need a new OS and i'll see what i or my brother can do for you.