In some installations the screen brightness control is missing in Windows 11, or there is no brightness option for the monitor in the Windows 11 settings!
Some Windows 11 Desktop OK users complain that they cannot change the screen brightness because there is no screen brightness option in the Windows 11 settings of their computers!
1.) ... screen brightness control in the classic mobility center!
|(Image-1) Customize the screen brightness in Windows 11!|
1. Start Windows 11 Settings ( Windows + i )
2. Go to ► System
3. Scroll on the right side to ► Display
4. In System / Display scroll to the item Brightness
6. And adjust the screen brightness to suit your needs
(... see Image-2 Point 1 to 6)
When your PC goes into automatic sleep mode, the screen switches itself off, which is also logical, because no image signal is sent and the screen is completely dark. This fact has nothing to do with the screen brightness control, it's just the energy saving options !
|(Image-2) Adjust the screen brightness controls on Windows 11!|
1. Start Run Windows + R and use the command gpedit.msc
User Configuration ► Administrative Templates ► Control Panel ► Display
3. Double-click Disable the on Display Control Panel and deactivate this rule.
(... see Image-3 Point 1 to 7)
The brightness option disappears from Windows 11 -Settings, if a setting this policy is enabled in the Group Policy Editor. You can check this setting on your computer. Disable this setting if it is enabled.
|(Image-3) Help, the screen brightness dimmer is missing in Windows 11?|
1. Start the Windows Registry Editor as always
2. Navigate to:
3. Double click on the NoDispCPL value and change its value to NULL "0"
4. Optionally, right-click and delete the entry
5. Restart your computer
This value in the registry, which hides the brightness control in the Windows 11 Settings app, or in the Windows quick settings [Windows + A] turns gray. Therefore, changing this value can fix this brightness slider problem.
|(Image-4) Screen brightness control Registry entry!|
Apart from the fact that the problem arises due to the damaged or wrong monitor driver, which is also the most common cause, there are also unfortunate coincidences that mean that the brightness cannot be adjusted! Please refer; ►► Use the device manager to update the driver!
Some Windows 11 users cannot find the controller or have the problem that they cannot change the screen brightness because there is no screen brightness option in the Windows 11 settings on their computer. The attempted to change the screen brightness via the quick access (Windows + A key) also fail because the slide control for changing the brightness is grayed out or completely missing. The problem with the option to change the brightness in the Windows 11 settings disappears when a certain registry key value has been changed or group policy setting.
|(Image-5) The screen brightness control in Windows 11 quick access!|
If you are interested: ► The screen brightness manager for Windows is OK!
|(Image-6) The screen brightness manager for Windows is OK!|
FAQ 191: Updated on: 12 November 2021 11:26