I have had my XBox 360 just under two years and run it though an HDMI lead to my HD TV, yesterday it developed a fault where the colours have gone all weird - psycadelic pinks and such. It isn't permenantly so but occurs a few minutes after switching on, and stays like it. No red ring of death. I have tried a different HDMI cable but no result Has anybody got any ideas what this could be? And, If I buy a new Xbox, is it easier to change hard drives, or transfer xbox live gamer tags to the new mchine?