My Gateway computer, which ran XP Pro, had a hard crash several months ago. Now, I am unable to boot the computer at all. When I start up the computer I get the "Unable to find boot device. Select proper boot device or insert boot media." message. When I look for my hard drive under the Bios, there are no hard drives listed. I can't reinstall the OS because there "isn't" a hard drive. I have checked unplugged wires and none are present. If anyone could help me, it would be appreciated.