LED UA46C6900VHXXY,Can I reset it etc...and it wont 'Dongle"

Hi, Just purchased the above Tv and I feel I may have done initial setup run.. Is there anyway I can reset the tv back to how it was when it came in the box??? I feel i have done it wrong as certain 'menu' items are not available to me(cant set time etc).....also I purchased a Samsung Lan adaptor but the tv doesnt know its there, but it does know when i stick a usb in to watch media? Any help please...im a techno dunce.:)