Xbox 360 won't power on

My Xbox 360 won't power on it has not moved for a couple of months and was working great. I bought a new HD TV moved my PS3 and Xbox to a new location and they have not moved since. My PS3 is still going strong and my Xbox now will not turn on. It was not dropped, bumped pinched, on pressed on. This is very frustrating. Any help would be greatly appreciated.

Thanks

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