|In most cases if the OS can't load there is no danger of damaging more data. It most cases that is. It rare cases you could if other things also happen. But in that case you can't get your data.|
You could try a linux live cd maybe. Try ubuntu or suse or fedora or knoppix to try to access the disk and get data off to usb drive or dvd's. Dunno about drm.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10