Change Windows 8 Lock Screen in 4 simple steps. The Windows 8 lock screen is more than just a background image. On this screen, you’ll find apps and widgets that provide useful notifications and alerts, like the local weather forecast, social notifications, messages and new emails. In just a few simple steps, you can Change Windows 8 Lock Screen and customize it to your liking. Steps Change Windows 8 Lock Screen 1.Hover your mouse to the Right Corner of you screen, to show up charm bar. 2.Check the bottom of the charmbar to find “Change PC Settings” Click on it from the Settings charm. 3.Select Personalize > Lock Screen. 4.Choose a background image from your computer, your camera, your SkyDrive account or Bing.