Default Take Nook Tablet BNTV250 Out Of Demo Mode

I searched for this, but didn't find it. I have bought a Nook Tablet that is still in Demo mode. I'm wondering how I would go about making it just a regular Nook Tablet with default factory settings. Can I just erase and deregister? Do I just need to root it and then put it back? Something else? Any help would be greatly appreciated, thank you.