Windows 10: Upgraded to Windows 10, Monitor turns off after 1-3 minutes.

I have had a screen-off problem now for over a month and have posted several times. Every 10-25 seconds the screen turns black for several seconds. I updated Windows 10 to 1709 Build 16299.64 but it does not help. It is impossible to work under those conditions. Please help!

 

I am on Windows 10 Pro x64 with four monitors (1920x1080) with a MSi GeForce GTX 960 on a Xeon 6-core processor. My monitors sometime act like that, but seldom for more than a minute.
One cause is that Microsoft installs my video device driver and OS updates whenever they wish, regardless of my restrictive update settings. Sometimes that goes on for a few minutes. That peeves me.
It also happens when I start program requesting admin privileges. It all goes blank before and after the pop-up to accept or reject admin privileges.
It may also happen when I drag a window to another monitor. Usually it's when I drag a windows playing video.

In other words, it happens, but it's not a constant problem as you describe it. You might wish to download the latest drivers for all of your hardware, and apply those updates. Just remember Microsoft is likely to replace them without notice. Of course, you need to verify all of your hardware is compatible with the version of Windows you are running, and consider there may be a conflict between devices.

Your upgrade may have hiccuped. You can make yourself a DVD of the complete installation of 1709 and do a non-destructive update-in-place using DISM.

Let us know what you find.