Thank you for confirming.
This does unfortunately confirm a hardware failure at this point. That is something that would require repairs to correct, however repairs for these units are simply not feasible, it would cost more to fix than to buy a new one.
If replacing, I'd highly recommend you consider a kindle fire instead: http://amzn.to/2i4n4xK
They cost less and are much better quality hardware and are better supported too. They also have far more books available, and you can load a nook app to the kindle to let you continue reading your prior BN purchases.
My apologies for the news.
If you have any other questions, just let me know. Otherwise, please take a moment to rate my service as this is the only way I am credited for my time. Hopefully I have earned 5 Stars but if not please let me know what I can do to ensure you are satisfied. I also invite you to contact me directly with any future support needs at http://bit.ly/1QwLxGh and ask for Nathan.
Thank you, ***** ***** a nice day,