I have a computer that crashed in an upgrade to 12.10 from 12.4 (Ubuntu). Now it will not exit Grub at all, and Grub will not recognize commands and seems to think there is no kernel. It cannot/will not find the harddrive, or anything for that matter. I can't access the terminal. CD drive is out. Cannot access internet via broken computer. All inputs other than keyboard are out. Toshiba harddrive cannot be rescued or formatted. Passwords lost, cannot be reclaimed. System is asking for the nonexistant harddrive password. Passwords reset several times by user; all rejected or lost. Any ideas?