How to change wallpaper in Windows operating system?
How to change desktop background Windows 7:
Step1: At first Go to Desktop → Right-click on your desktop and click Personalize.
Step2: Click Desktop Background
Step3: Then Choose the wallpaper which you want to set the desktop’s background → Click Save changes button.
Step4: Otherwise, click Browse → Search the location of wallpaper which you want to set desktop’s background → Choose the wallpaper and click Save changes button.