My video card is an xfx geforce 6600 256mb agp 8x. This card is meant for gaming and I know it can. When I start windows and everything it tells me that it is not receiving enough power and is lowering the vid cards standards. I'm supposed to hook it up straight to the power supply, which I did with a molex and it still pops up that message. I have noticed that I can't play even simple games at even half graphics, what is the problem, and what to do?