Have you tried updating or rolling back the drivers to an earlier version?
A blue screen is usually always caused by either hardware, driver or system issues. A game won't be responsible, but it can trigger the already existing problem, in this case possibly some error in the drivers.
Yes i have. i tried 4 different drivers that people reported fixing their fallout 3. i updated my audio drivers that fixed my glitcheries because i was using wrong ones as pseudodrivers (didnt even know its possible) Overclocked and underclocked my cpu. fiddled with my Gpus clocks and now the last thing im going to check is my RAM sticks because ive heard that 0x7f error is sometimes RAM based.
EDIT: Now i have tested all my 4 one gb RAM sticks and none of them was faulty.