Change Background Picture On Slide. Changing the Background Image. Right-click one of the blank slides and select Set Background Image for Slide.
Click the lower-left Start button type desktop in the search box and tap Change desktop background in the results. Right-click one of the blank slides and select Set Background Image for Slide. Open the Desktop Background window.
You can change the background of your PowerPoint slides through the Format Background feature.
Although you may now know how to set the Slideshow up in Windows 10 did you know you can make it go faster. You now see settings for Slideshow. The process will look. To use an Image as the Slides main background select Image or External Image as the Source.