I recently built my 4th desktop from the ground up, and am having a very strange phenomenon occurring..
At different times and under different loading scenarios (light, medium, heavy, idle), the computer will be operating fine (low temps, low processor/memory demand) and all of a sudden the video will go blackish-grey, and then lose all output to the monitor, as well as having the audio crash and freeze.
The cpu keeps running, however the computer becomes unresponsive to the keyboard and mouse, and requires a reboot.
I have not been able to reproduce the problem on demand (Prime95 ran 3 iterations just fine), but the crash is still occurring at random, and for no particular rhyme or reason.
I am STUMPED! Considering reflashing BIOS. Also going to verify Power supply is good with multimeter today.