So i re-installed win 7 about a month ago, since then 3-4 times ive been getting a problem, every now and again my screens will start flashing black and say that the driver has crashed but recovered, it will then continue to flash. After about 30 seconds of this i will get a blue screen and the pc will restart and be normal. My temperatures when this happens are rarely above 50c, last time it happened my GPU was 42c and CPU 45c. I have the latest version of driver and have a 7770 card.