Well, I have a Geforce 4 something rather video card that doesn't seem to want to run any video for too long... I can play a graphics intensive game for anywhere from 5-50 min. before my screen goes black, and the power button dims as if in idle mode. If I turn my monitor off and thn back on, I either get no signal, or odd colored lines on my monitor. I have the latest drivers, and I do not believe that to be the problem... can anyone shed some light?