Are you sure you are booting from a cd/dvd when you get that msg? If so, it cannot be a vista problem, it is a hardware problem such as; failed board, failed ram, pw supply etc.
To test, open the case [system off] pull the power connectors from ALL drives both hd and optical. Disconnect any usb type device such as hub, scanner, printer, etc. Now attempt to pw ON the system and see if it will complete post. If it does complete post, then shutdown and start connecting devices one at a time until you find the problem. If it does not post in the above config, then you will need to swap parts with known good units ie pw supply, ram, board, etc.