There may come a time where your Nook acts up and you need to reset or completely restore it, for whatever reason. I've already had to and I've only had it for a little over a month. There are two ways to do this, one is a Reset and the other is a Manual Restore. Be aware that you'll lose all of your settings, screensavers, wallpaper, etc. that's stored on the Nook's internal memory when doing a restore, so save it all to your computer first if you want to keep it.
How to do a Reset ............ -HERE-
