The lock screen in Windows 8 shows a large image through which the computer can display a few pieces of information, including the time, date and some apps.
But you can actually change what appears on there. To do so, you need to head to the settings screen, by passing the Windows key + C, and then selecting the Settings icon. There, you can click “Change PC Settings”, and then “lock screen”.
There, you can change your lock screen image, and you can also change up some of the apps that are displayed on the front screen as well.