I've recently built a machine and whenever I boot up, a message is displayed saying: "The Nvidia system sentinel is reporting that Nvidia-powered graphics card is not receiving sufficient power. To protect hardware from potential damage or causing a potential system lockup, the graphics processor has lowered its performance to a level that allows continued safe operations." I am not sure as to why this is happening. My PSU is 420 watts, which should be more adaquate for my Athlon 5X-53 and my AGP GeForce FX 5200. I have the molex attached to the video card and the video card is seated properly in my mobo. Any ideas on what the problem is? Are we looking at replacing the PSU, motherboard, or video card? Or am I missing something? Thanks.