Right-click an empty space on your desktop and select . Click on Desktop Background at the bottom of the window.
The process for the classic desktop remains similar to previous Windows versions but is accessed through the new interface. :
: From this menu, you can select from various pre-installed background patterns or change the background and accent colors.
: To use your current desktop image as the Start screen background, look for the thumbnail of your desktop wallpaper in the bottom-right of the personalization options and select it. Changing the Desktop Background
: For the best results, use high-resolution images. If your wallpaper appears blurry, ensure the image dimensions match your screen resolution. Finding New Backgrounds