Monitor Flatron W2234S?

The picture is fine but the screen goes blank and then the picture returns with message 'processing self image setting.' Picture stays for a few minutes then screen goes blank again and goes through the process again ad infinitum. Sometimes after going blank the picture returns with a different message different message stating that it automatically setting the resolution to 1680 x 1050. Whilst writng this the screen has blanked about five times. During the blanking the power light stays on!