Q&A for How to Reset a Nook

Hold the off button and the button that goes to Home. It will ask you if you want to reset - say yes.

Hold the power, both volume buttons, and home screen at the same time until it turns off.

First, you should try plugging it in and let it charge for a half hour. Once it is charged, hold down the power button for three seconds and see if it turns on. If this doesn't work and you don't get any message on the screen, you should go to a store that does repairs and have them take a look at it.

Call the seller and ask him for the pass-code. If you can't find his/her number anymore, try searching online how to reset the pass-code. There also might be a factory-reset on the back or inside the device.