Step 1. This process is rather simple. Right-click anywhere on your desktop.
Step 2. Select Properties, or Personalize, depending on the Windows’ version you use.
From the lower right corner of the set-up window, choose Screen Saver.The Screen Saver application pops up.
Step 3. Choose a screen saver of your liking. Test it by clicking Preview.
Step 4: When you finished your settings, click Apply.
Result: You have successfully changed your screensaver in Windows.