What could prevent Windows from turning screen off?

[coyote455]

Hi!

I noticed in the past few weeks that my laptop doesn't turn display off when I leave it on idle.
My current settings are "dim display after 2 minutes" and "turn display off after 5 minutes"... yet nothing happens even after hours..
I think this is because a certain program overrides the default Windows settings. How could I find out which one?

 

[torchwood]

Hi Coyote,

Did you install/update any 3rd party programs or install a new device, just before this issue started??

Roy

 

[coyote455]

I have my USB receiver plugged in (Logitech) for my mouse, but that's never been a problem.
As for software, I use Logitech SetPoint and HwInfo64 (running currently), I don't think these would affect Windows (they don't even have screen-related settings)