I know there are a number of posts concerning this, but as much as I follow the directions, there seems to be something missing in the Lockscreen setup in PC Setting. It does show pictures of my picture folder; the slideshow is enabled. There are folders showing underneath the picture. (Also, my screensaver is set to 'none'.) What is missing is the inactive time option. Nowhere to be found. What I notice is that, on the examples of the forum, the slide bars to set on or off are blue. Mine are red. Don't know if it makes a difference. I am using a laptop, and it is plugged in. I am using Windows 8.1. Thanks in advance for any tip to get it going.