I have a pair of Dell 19" 4:3 flat panels for use with my vintage computer collection. I was just rearranging the monitor arm and somehow put the Dell 1905FP into "burn in mode" by laying it down when powered on and it pressed some button combination. It now cycles through primary colors and will not respond to any button presses other than power - I am unable to access the menu. Googling will list some of the magic button combinations for more modern monitors, but not this 20yr old LCD. I've tried every empiric combination of buttons, power switch, and hard power that I can think of without success. Anyone remember how to get out of this mode?