Selecting “Slideshow” allows you to select an entire folder of images to use as rotating background images.
To navigate to the location of Windows’ default background images, click “C:\ (This PC)” in the panel to the left. Then open the “Windows” folder followed by the “Web” folder. Here you will find a variety of folders containing the default background images for Windows. [1] X Research source
To permanently delete the images files from the Recycling Bin, right-click the Recycling Bin on your desktop and click Empty Recycling Bin.
To navigate to the location of Windows’ default background images, click “C:\ (This PC)” in the panel to the left. Then open the “Windows” folder followed by the “Web” folder. Here you will find a variety of folders containing the default background images for Windows.
To permanently delete the images files from the Recycling Bin, right-click the Recycling Bin on your desktop and click Empty Recycling Bin.
The default themes that came pre-installed on Windows can’t be deleted.
If the text that says “Delete” is greyed out, you can’t delete the theme.