|How do I do a hard reset (system restore)?|
Warning: This will remove all your content and should be a last resort when your nook will not work properly. Use this reset procedure at your own risk.
There are a lot of "ideas" on how to do this. I think these are the two reliable ways.
Method #1. Use this if you haven't rooted your nook.
Method #2. Use this to go back to the firmware the nook was shipped with (use this if rooted)
This will actually restore it to the same exact way you got it from the store. It's the equivalent of restoring your computer with your installations disks.