I have had apple tv working until now. The main menu flashes, then goes directly to the movie menu option. I can't scroll to any of the other options...tv, music,...settings. I have unplugged the device several times with no luck. Also, I have tried holding down the menu key on the remote, also with no luck. If I do choose a movie, there is no sound. So, apple tv is effectively useless at this point. Can anyone help?