I have had this ongoing problem for a while now and it is starting to crash more frequently. When I boot my system (Vista 64) the screen will flicker through the whole boot and sometimes after it goes to the windows loading screen, it will turn black, reboot itself, and then load. Also when I play certain games like Heroes of Newerth or Amnesia the screen will flicker occasionally when its first opened and when I play HON the game will sometimes crash. I use an LCD tv as my monitor but I have tried with my PS3 and it doesn't have any issue, I tried switching from DVI to HDMI to HDMI to HDMI from the graphics card. I even bought a bigger power supply for my new ATI 5850. I am not sure what is wrong with my computer, but it is really bugging me. Any suggestions? Does anyone know if my MOBO is not compatible with ATI cards?