When im viewing online streaming video, (the likes of youtube etc) or even if there is flash content on the screen, my computer will freeze, i can still move the mouse, but i cant click any of the windows/tabs i have open. Then the screen goes black as if in standby mode, the music keeps the same pitch of whatever was playing (really annoying). I at first thought it to be a graphics problem, so after nipping down to PC world, and buying another graphics card, installing that one, and trying again, i still had the same problems.
Not only does this happen with online video, i cant play games. I can watch DVDs / downloaded content, but just not live stuff.
Any help at all will be most appreciated.
Thanks a bunch