I had a similar issue with Vista, where it refused to do anything. I grabbed a linux live cd off the net and booted up using that. You will be able to see everything that is on your drive and copy the files off if needed. There are also disk utilities which will let you scan the drive. In my case the hard drive was fried and needed to be replaced.
yea i tried the partion wizard image and it didnt work. it brought me to te first screen to boot from the partion wizard. Then went to a screen with alot of scrolling black text and stopped after about a minute. my keyboard froze and it wasnt doing anything.