Win7 wallpaper rotation disrupted each time

[DutchKevin]

Hi guys,
Today I have a question totally not related to Excel. But I hope that your expertise can also support in this case. This has been bugging for a long while now.
I have a question about influencing the Win7 wallpaper rotation via batch or other code.
The issue I encounter is like follows.

I have a folder with nice pictures. In the Win7 wallpaper settings I can choose to use all in a random rotation. So every 5 minutes my desktop is showing something else. So far no problem.
However I frequently dock and undock my laptop. And in some (not all) cases the rotation is disrupted. When I check the settings then, it has only the current picture checked in wallpaper settings, and all others are unchecked. It's not that my battery is low, so that rotation woudl be disabled to save power.
Now I could redo this selction manualy each time, but I’m looking for something more fancy. Not having to go into the settings each time.

Do you know of a way to use batch code, or a registry entry that can be called from a batch, to make the wallpaper select all pictures into the rotation again?

Thanks for helping, or at least for trying to help

Kevin

 

[DutchKevin]

i'll try just one bump if you allow me