Go to the Plug and Play option in the SETUP menu, and run through the set-up again. When prompted, you'll want to select "HOME" mode, and NOT "SHOP" mode.
After you go through all the initial settings after that, your settings should stay put.
Keep me posted.
Got a Samsung 1080p lcd on the hdmi channels and tv i can't store my settings ie movie or normal. It saves for a while then the screen blanks out and my tv reset back to Dynamic and any other changes i may have made are lost. Can anyone help me please? i been on Samsung site but couldn't find anything relating to my lcd.