I have a Lenovo Thinkcentre M52 with Windows XP. A few days ago, it froze. So, i hit the power button to shut down. I recently tried to restart it and it won't boot up. Lenovo does not ship XP disks so I can't do a repair or access the recovery console. I have tried the boot from the floppy disk option, but the computer hangs on the final disk. In addition, I have tried the "F11" option suggested by Lenovo to access the "Rescue and Recovery", but this does not work either. Any suggestions?