iPad Pro boot loop
My iPad Pro 9.7 inch kept restarting after owning it for 1 week, an now it's stuck in a boot loop, even after getting it to 0% then back to 100%
iPad Pro, iOS 9.3.3
Since it is only one week old I would recommend taking it back to an Apple store for evaluation. Nonetheless try holding down the Home and Wake/Sleep buttons at the same time for about 15 seconds until the Apple logo appears. You will not lose anything.
If it does not help try the steps here:
https://support.apple.com/en-us/HT201412
If that does not help, the store would be my next suggestion.