For some reason my PC does not like playing video anymore? If i play video files i start getting a black screen flashing on every couple of seconds, and sometimes the PC reboots itself. This happens when using, winamp and windows media player. If i cancel playing the video the screen continues to do the flashing bit intermittently. I have updated drivers for my graphics card but it has made no difference? Any ideas would be much appreciated, im sure you can imagine its a little bit annoying, im guessing i have picked up some kind of damage somewhere, but apart from repalcing drivers im stuck?