Laptop Won't Turn Off Screen And Play Slideshow

I have a problem with my fresh install of Windows 8.1. In the settings menu I have enabled the option to play a slideshow on the lockscreen and that when my PC is inactive it will show the lock screen instead of turning off the screen. For testing purposes I have set the screen turn off timer to 1 minute, but here's what happens:

After that one minute, the screen will dim slightly for a brief moment as if it wants to turn off the screen/go to the lockscreen slideshow. Then one minute later, it will do the exact thing again. Like it's being waked the second it wants to turn off the screen.