Over the last week or so my xbox has started to freeze. I'll be playing any game and a red matrix appears on the screen like a chess board. It only flashes for a split second before the console freezes displaying the last frame of the game. No red lights appear on the console and it has to be restarted.
It's well ventilated and I've tried the various troubleshooting techniques described on the xbox support site. Anyone got any suggestions before I take this to Microsoft?
EDIT: It just crashed immediatly after getting to the dash after power on. The red matrix stayed so I managed to take a picture with my webcam:
EDIT 2:
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