Check this one out... I came home from work last night, and the monitor wouldn't come up. The pc was on, but the monitor was stuck in sleep mode. Rebooting the pc didn't get it back. Unplugged the pc, shut off the monitor, went to bed. In the morning plugged it all back in and nada. Attached the monitor to another pc and it worked fine, hook it back up to my main pc and now it works fine.
BUT, now I can't r-click over the desktop to adjust the power settings. I can still get to the settings through the control panel, but r-clicking over the desktop just brings up the hourglass for a bit, then nothing.