Happening when I run MW2 trial thing on steam, also complete with looping sound.
It also affected TF2, which I solved by running windowed, adjusting my res to native, playing a game, quitting, then running again, restore to full screen in game and all is good. Done this three times on seperate formats it's needed it every time. It's also very occasionally affecting PKR Poker, which is about the least demanding thing ever.
This crash appears to be my machines new thing, it apparently got bored with the old crash of 'shut off pc without warning even if forced to BSOD option is checked.

Specs:
Q9550 @2.8
8GB RAM
GTX280
850W Zalman something PSU
Nothing is overheating unless it jumps like 120 degrees in the 4 seconds I get in game. Sufficient power, still plays Crysis, TF2, Just Cause 2 etc fine.
It also affected TF2, which I solved by running windowed, adjusting my res to native, playing a game, quitting, then running again, restore to full screen in game and all is good. Done this three times on seperate formats it's needed it every time. It's also very occasionally affecting PKR Poker, which is about the least demanding thing ever.
This crash appears to be my machines new thing, it apparently got bored with the old crash of 'shut off pc without warning even if forced to BSOD option is checked.

Specs:
Q9550 @2.8
8GB RAM
GTX280
850W Zalman something PSU
Nothing is overheating unless it jumps like 120 degrees in the 4 seconds I get in game. Sufficient power, still plays Crysis, TF2, Just Cause 2 etc fine.