I made the AVG executable rescue disks, but not the system rescue disks because I'm not sure I have the same version of Windows. So if those rescue disks don't work, then there's not much that can be done, correct?
I think that the only solution here may be to slave the drive in another computer and see if any data can be saved. This person didn't have any AV or firewall software to my knowledge, and has a teen who file shares.
