Decided to fire up the 360 today and play some drums, Noticed during gameplay my screen would start flickering blue and green colours, Looked at my dashboard and noticed this

Any ideas whats going on? And this is a September 2007 zephyr elite, Occasionally get the E74 error on boot with one red light but took no notice of it.
EDIT: Also seems to be not displaying audio/video on boot up, left it for a few minutes and it booted but still the weird colours on screen

Any ideas whats going on? And this is a September 2007 zephyr elite, Occasionally get the E74 error on boot with one red light but took no notice of it.
EDIT: Also seems to be not displaying audio/video on boot up, left it for a few minutes and it booted but still the weird colours on screen
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