Hi, When I want to go away from computer i usually turn off the monitor. When I come back and turn the monitor on (and press spacebar several times) I see no signal message, but the sound is still coming from my headphones. After I restart computer I see loading screen and... ...No signal message. To fix this I use installation USB stick with win 10 tech preview and use startup repair (don't remember it's real name) and it works, but next time my monitor is turned off, I have to do the same thing again.I had exacly the same issue on win 7 pro. How to stop it?