I have my monitor set to turn off in the power settings after 10 minutes of non use. Instead of turning off it just goes black with a moving blue box that says "cable not connected". No screensaver is set. In the past i fixed this by switching from HDMI to VGA/DVI. Well, the other day it decided to start doing it even with the VGA/DVI cable and switching back to HDMI didn't fix it. I also tried plugging the monitor into the other port on the video card but that didn't fix it either.
I'm not really sure what else to try but it's getting really annoying (not to mention i feel like it's not safe) to have to unplug the monitor every time i leave the house/sleep.
Note: The power button is broken (luckily it broke while it was powered on) so what's why i need it to turn off after a certain amount of time or when i put the computer to sleep.
Specs just in case:
Monitor: Acer H233H
Windows 7 64bit
Phenom II X4 955
ASRock 970 Extreme 3