Very little info you gave but go to the screen set up or format menu and switch around to the screen size that works for myou. Or best yet, go back to the store and ask for a little customer education. You see with out the instruction manual in front of me and the set here as well, this is a hard call. Im not at all trying to put you off, just quessing is not going to get you anywhere. Like I said the best thing to do is call customer service listed in the owners manual or go back to the store where you bought it, as maybe there is a problem with it?? Good luck
Usually answered in minutes!