I put the 'System Mechanic'disk in the D drive, but didn't insert it. I had to finish something online, and did so, but then got an automatic restart! The D drive went in, and the system tried to reboot, but wouldn't. Gets to message "Press DEL to run Setup, Press TAB to display BIOS POST Message. "
No change while I:
2) tried to restart using original WIN VISTA 64 OS Disk that came with the custom system.
3) tried downloaded boot disk from winimage
4. called, emailed and prayed to Microsoft, but no answer or contact
Only thing I found online for somehting that might have been similar was a suggestion to remove the CMOS battery, wait 3 minutes, and restart.