Yes, there is. Using your remote, press:
Menu > Setup > Plug and Play [Enter]
From there, you will go through the initial setup, but when you choose HOME Mode, that demonstration will disappear. (The Ads will appear if you choose the other SHOP Mode)
I recently bought a new Samsung LCD tv, a display model from the local electronic store. The tv is great and is running fine, but the problem is that there is a message/logo (I'm not sure if its either) that runs through the bottom of the screen, showing Series 6, energy efficent, etc etc, every 2-3 minute. It gets really annoying whenever I'm watching a show or playing a game. Is there any way to get rid of the message/ logo?