So I was playing some Counter-Strike source a few minutes ago, out of nowhere, the video and audio cuts off to nothing, the computer is on, hard drives are spinning, yet it hangs, nothing is happening besides a black screen, Ctrl-Alt-Del, Alt-F4, that crap doesn't work. Have to do a hard reset, everything seems okay, to see what happened I open up Event Viewer in the XP console. It says the ATI smart service has started. Seconds after the PerfNet service was unable to start. What is going on, this never happened with my Nvidia card, I'm using Cat 5.6s with AGP Fast Writes on. This happens completely randomly on two occasions now, my computer is Prime95 and 3Dmark stable for over 10 hours. Using Nforce 5.10 drivers for K8N Neo2 Platinum motherboard. The video card is an ATi Radeon X850 XT Platinum Edition. HELP WOULD BE GREATLY APPRECIATED!