Hi Mason!
Have you ruled out that the issue is not a hardware failure? I have worked with several of these tablets with the same issue your describing. It turned out to be a faulty power flex cable.
If it is a software related issue(which doesn't happen often) follow [https://developers.google.com/android/nexus/images|this link].
This will help you go about flashing a stock OS to the device. You may need to do some searching on Google for the devices most recent OS.
But yes this is a fixable issue.
Good luck mate!
Cheers!
Josh.O