I want to close the monitor, but leave everything else running in the background, just like the monitor is plugged off - but it's a laptop, so you won't find a power button, and no relevant fn key is found though some laptop has this feature.
Is there a software for that?
I've tried some, even found a WINAPI to close the screen, but all of them just lock the whole system.
I think this requires some system configuration, since in a majority versions of Windows there is a setting option for that, but not in this specific version of Windows 8.1.
Running a black splash is a workaround, but in this way the monitor is not really turned off.