You could try using a LinuxLive disc which runs the Linux sysytem without installing anything whatsoever on your system.
Download a Linux (I suggest Linux Mint - easiest) .iso and burn to disc. Run it and when it's finished loading you should have a 'Computer' icon on your screen. Use that to find your drive and files (if they're not totally broken) and copy them to another external drive. Don't be put off by the mention of Linux, it really is quite easy and when you've finished leaves absolutely nothing behind, works entirely from DVD.