In Windows 7 the wallpaper was usually found in %AppData%\Microsoft\Windows\Themes\TranscodedWallpaper . In Windows 10 you will find it in %AppData%\Microsoft\Windows\Themes\CachedFiles .
In Windows 7 the wallpaper was usually found in %AppData%\Microsoft\Windows\Themes\TranscodedWallpaper . In Windows 10 you will find it in %AppData%\Microsoft\Windows\Themes\CachedFiles .