When I put the DVD in, and boot from disk, it still gives me the error message. I've checked the BIOS boot, and CDROM/DVD is on top, I've pressed keys during boot, I've even gone into boot settings and selected to boot from DVD. All just end up showing the windows error message. Am I doing something wrong? Should I try a USB?If you can get Linux to boot you can look in the System Volume Information\_restore\RP folders for previous copies of your registry including the SYSTEM hive file.