I found another site to night where someone seems to have found a temporary solution. "UNPLUG the monitor from the power supply for about 5 - 10 minutes".
The CPU can be left on but unplug it from the power source and not just behind the monitor. Then after it comes back on, change your mode/display settings. I had to wiggle the power cord on the back of the monitor a few times when the blippen message can back again. But after a few wiggles and changing the mode lower than the recommended 1280 X 1024, I finally got it to work. This seems to be a temporary fix from what I read. After a while the problem came back for the other users since it is a problem with a switch/connection or something in the monitor plug. I guess this is a known problem with SAMSUNG. If your monitor is still under warranty, contact them and they will repair it or maybe even replace it.
I hope this works for you as well since it took me about 4 days to find something that works other than VGA mode. Good luck and I hope this helps.