I'm running Windows 8.1 desktop with 3 monitors. They are set up to show password-protected screensaver after 5 minutes of inactivity and then to turn all screens off after 30 minutes. It used to work great until ...

I installed Windows updates yesterday and noticed today that one of the screens doesn't go into power saving mode. It is weird because two other screens do. I noticed today when I walked into the room and saw this bluish glow.

I tried changing the setting in the CP under display to turn off screens after 1 minute and it still did the same.

Any idea how to fix it? Roll back the updates?