A friend of mine recently experienced that same problem he just called 1-800-4MY-Xbox and they gave him a button combination to press on his Xbox 360 controller and it reset his system and fixed the problem
i was playing cod 5 on my xbox picture quality rapidly deteriorated so i turned it off when i turned...
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i was playing cod 5 on my xbox picture quality rapidly deteriorated so i turned it off when i turned it back on i had no picture and no sound through hdmi lead so i tryed standard lead i had sound but no picture so i tried a different tv same problem but i had no flashing red ring on xbox any ideas please