The themes can be found here: %localappdata%MicrosoftWindowsThemes (chose “run” and paste the location into the location field). Go to your specific theme and go into the folder . Here you will find all your background images.

How do I get more backgrounds on Windows 10?

Select the Start button, then Settings > Personalization > Themes. Choose from a default theme or select Get more themes in Microsoft Store to download new themes with desktop backgrounds featuring cute critters, breathtaking landscapes, and other smile-inducing options.

How do I get the old Windows 10 default wallpaper back?

Step 1: Open this Imgur link and save the image to your desktop. Step 2: Go back to your desktop and find the image you just saved. Right click it and choose Set as desktop background . Your desktop wallpaper should now be back to the original Windows 10 wallpaper.