Computer problems..?

If you have stuff on that hard drive that you need, I would take the hard drive out, set it as a slave drive and install it in another computer where you can go in and copy your files off of it (if you don't know how to do all this stuff yourself, print this out and take it to a Geek Squad or computer repair place in your area). Once you've got all your files saved off of it, install it back in its original computer (switch it back to Master) and then use the recovery discs that came with your computer to restore your computer (re-format the hard drive and re-install windows). Usually, doing this simply consists of turning your computer on with the recovery cd in the drive - it should ask you to "press any key to boot from the cd" - then you follow the on-screen instructions. If you had to get someone to do this at a store, it might cost you about $80 - unless you have any tech-savvy friends that can follow these instructions and do it for free. Hope it all works out.