If you’re considering upgrading your monitor or switching to a 2-monitor setup, check out our guide on how to choose a monitor.
Note that the brightness slider only appears in versions 1903 and later of Windows 10. To change the brightness in earlier versions, use the Settings menu method below. The slider won’t appear if you’re using a desktop PC and external monitor. Use the monitor’s control buttons to adjust the screen brightness. For example, if you’re using your TV as a monitor, you’ll need to use the buttons to navigate to the brightness settings on the TV.
If you’re trying to change the brightness on an external monitor, you’ll need to use the monitor’s button. For example, an external monitor connected to a laptop will have buttons on the sides or back. If you’ve connected two monitors to your laptop or desktop, you’ll need to adjust them separately.
Use a lower screen brightness to conserve power/battery life.
In the Display settings menu, go to the “Brightness and color” section. Check the box labeled Change brightness automatically when lighting changes.
Search “Device Manager” in the taskbar search box. Click Device Manager in the list of results. Select Display adapters in the Device Manager window. Select your display adapter driver. Right-click the display adapter driver. Click Update driver and follow the prompts.
