Well, if you have the Original key, you could borrow a friend's CD and install it, then, it would be okay. If you don't have anyone to actually have the CD key, PM me. You will need a CD/DVD burner.
Originally Posted by ASSEMBLER
sounds like it could be the hard drive maybe worth getting a new one
try reformatting it with PQ magic then do a reinstall this will clean the drive completely as windows does not. but i think the drive is on its way out.
You could always use someone else windows cd as long as you have a registration key. ask around see who has a original disc or could burn you a copy.
It has nothing to do with hardware. But, I agree on the CD borrowing.