Man-wai Chang ToDie wrote:
until you do something that requires UAC, or a 3D game. When the UAC
screen dimms, the screen becomes totally scrambled. The same if you
start a 3D game like Doom. There is no clearing the display - the
computer has to be rebooted.

Could it be over-heating in your PC case?


Try opening the case while using the PC and see if it would happen again.

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