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HTC One M8 Running Windows 10, Phone stuck in restart cycle. What should I do?

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Windows Central Question

HTC One M8 Running Windows 10, Phone stuck in restart cycle

I have an HTC One M8 running the windows 10 preview ahead of the actual windows 10 mobile release. Last night I plugged it in to charge as I do every night and this morning it was off. I turned it on, the HTC logo appeared for less than a second, the phone vibrated and it powered back off. It has now been repeating this cycle all on it's own for over an hour, vibrate, begin boot up with HTC logo, power off, repeat.

My computer will not recognize it when plugged in with it's charging cable.

Hard and Soft reset button sequences have done nothing, it just maintains the cycle.

Please help