To open the Settings, click the Start menu and select the gear icon.
From the Settings window, select “System.”
From the sidebar, select “Power & Sleep.”
You’ll see a drop-down for “When Plugged In” under both “Screen” and “Sleep.”Select a drop-down under “Screen” when the screen is turned off.To prevent Windows from turning off your display, select “Never” from the menu.
That’s it.
This feature is very useful to increase the battery life of the device, and to some extent, it even prolongs the screen life. Not every person likes this feature, however. Many people prefer to keep the screen from turning off, whether they are actively using their computer or not.
