I'm stumped. Yesterday morning my computer was working fine. I stepped away for a few minutes, and when I came back it was on a black screen of death saying "Reboot and select proper Boot device or ...

I think this is either a Win7 issue or the HD. On a fresh Windows 7 install (which I've re-installed about 4 times in the last few weeks, don't ask), when powering up cold, the system won't detect the ...