|Try a Live Linux CD, such as Puppy Linux or Knoppix. These run from just the RAM and CD. If the HD is reasonable you should be able to access your own files and drag them onto a Flash Drive.|
You would need to use the image burning feature on another computer (most burner software has this, or there are free programs).
You then ensure the CD is ahead of the HD in BIOS in the dud computer and boot up with it in the drive. After a little bit of fiddling around answering a few questions Linux will arrive. It won't alter anything in Windows.
Always pop back and let us know the outcome - thanks