I've got a BENQ FP731 in my office when I go to leave at the end of the day, I put my pc in standby mode, and them my monitor starts flashing different colors, but won't turn off, the power button doesn't work. The only way to get it to stop is to unplug the monitor. This AM when I got in I plugged the monitor back in and it started flashing colors again, when I started the Pc up it would beep in time with the colors, I had to turn both off (now the power button on the monitor worked) and on for it to work.