Hello I recently encountered this problem that I can only assume is caused by my graphics card (ATI Powercolor X1950 Pro). Sometimes when I'm playing a graphically intensive game, all the sudden the monitor will turn black and the light will start blinking. I can only assume that this happens because the monitor thinks it isn't receiving a signal anymore. I thought that this might be heat related so I ran rivatuner along with 3dmark06 and the problem happened at 89 degrees Celsius. I don't think that temperature is too hot but I'm not sure. Any help would be appreciated.