I have Windows Vista installed on my desktop. Today when I woke up, the computer had turned itself off and when booting up states "No bootable device -- insert boot disk and press any key." So I used my Windows Vista Anytime Upgrade disc to boot to "Repair your computer" option. When the System Recovery Options loaded, it could not find my Windows installation so I just hit Next anyway. When I went to Command Prompt, it brought me automatically to "X:\Sources". I tried running "bootrec.exe /fixmbr" and "bootrec.exe /rebuildbcd" and both outputed "Device not found." I tried "cd c:\" and it outputted "Device not found." I tried Startup Repair and it said "Startup Repair cannot repair this computer automatically." ProblemSignature06 reported NoHardDrive. I rebooted and removed the CD, and still no luck. I entered the BIOS via F2 and switched the boot order configuration, so hard drive was above CD/DVD, saved, and then it booted up to Windows! But I restarted and am only getting the same "No bootable device -- insert boot disk and press any key." Please help me. Thank you.