Mookie' should right about the optical drives, unless you have SATA optical drives, of course. Also, I agree with NOFX about the linux live disks. You should use your fucnctioning computer to download knoppix, or suse live disks, or whatever. Burn the .iso to a cd-r and boot the non-working system from the cd. If you can read the files, the drive is still ok, if not, then the drive is more than likely toast.
I've had the same problem a couple times, and both times it was a corruption of windows, and by using the linux live cd's, I was able to check to see if my data was still there. Anyway, good luck.