Idea pad tablet k1 is stuck in boot / start up mode

My k1 is stuck in start up mode it loops between the nvidia tegra graphic. I've tried to start up while holding the volume and the power button, the screen flyickers and the home button lights come on but does nothing else. Any help would be greatly appreciated.

I had the same problem last year.  Had to send it back to Lenovo for repair under warranty.  Not sure what they did - they said they would have to change the motherboatd, but the customer service reps for tablets aren't as knowledgeable as those on the ThinkPad tech support line.
Keith
Formerly 600E 2645, T30 2366, X31 2673, T40 2373, T41 2379, T42 2373, T42 2379, T60 1952, T61p 8889, T61p 8891
Currently T420 4177-CTO, T430 2347-A54, T430 2349-L64, T430 2347-UN9, T430 2342-CTR, Ideapad K1, H520S 2561-1LU

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