I didn't notice such problem until recently I played games on it. I think it might related with the delicate GPU since I never saw it without gaming. I played diablo3 on it and the screen just keeps flickering in the several seconds after I switch to desktop or switch back to game. Sometimes flickering even happens while I'm gaming (occasionally). Wonder if anyone have the same problem? if it is software related (D3)? since I never tried other games which can push the delicate GPU up on it. Thanks.