Regardless of case fans, remove the case cover and:
1. Make sure the video card cooling fan is working.
2. Leave the case cover off and point a fan at the machine.
Better or same?
My display used to very unstable while scrolling windows up/down and dragging them around. I downloaded new drivers and this helped in that regard. Still, my mouse pointer, and any onscreen movement, for that matter, leaves behind small stray pixels of red and yellow, and you can forget about games; very unstable with those stray pixels filling the screen and all sorts of other instabilities (CRASH!). And even more lately, my screen freezes and my system crashes just doing mundane tasks. I've tried 3 different driver versions. I've reinstalled windows. My CPU temperature stays around 40

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