I have screensaver off in Win 8, now 8.1, but in power options (high performance) I've set the monitor to turn off (go black) after 20 minutes of inactivity. Normally, when I come back to the computer, tapping the Escape key brings back the desktop in short order. However two times lately, one about a week ago in Win 8, the other just now in 8.1, there's been no screen response and I've had to shut down the computer and reboot. It's the monitor not responding, not the computer, which for example just now was still playing music at Spotify when I came back. I assume it has something to do with power options, but I can't figure out what. Any ideas? Thanks,