When i switch it on it comes on with a white screen and a flashing red "burn in" message in the top left. It flashes the message up 14 times then the error message moves to the top right and does the same thing. The message then moves to the bottom left then bottom right and finally the centre. Then the screen goes black and i get a white non flashing burn in message in the centre for a few seconds. then the cycle repeats over and over again.
This happens whether the monitor is connected to the pc or not.
Any advice gratefully received.