How to Fix Brightness Control Failure After Update Windows 11

Ralph Adolphs
Ralph Adolphs

Updated:

One day, you open your computer and notice the brightness is at greatest. The built-in brightness control button on your keyboard doesn’t work. You open the settings bar in the lower right corner, but you only see the sound control bar. The brightness control slider is missing. You check the display settings, but you still can't find any option to adjust the brightness."I'm going blind!".

A lot of users counter this problem after their computer updates to the latest Windows 11. So how to fix brightness control failure after updating Windows 11? This article may solve your problem with serval useful methods. Check it out.

Brightness control nar missing

Way 1 : Change the Registry Settings

Step 1 Press Win ＋ R and type "regedit" to open the Registry Editor.

Open the registry editor

Step 2 Open the following url on the left column.

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}

Find the folder

Step 3 Find the 0000 and 0001 folder. Right click it and select New-DWORD (32bit) value.

Right click 0000 and new dword 32 bit

Step 4 Rename it with the following name and double click it, change its value to "0".

KMD_EnableBrightnessInterface2

modify and change its value to 0

Step 5 Following Step 4 do the same thing in 0001 folder.

change its value to 0 in 0001

Step 6 Restart your computer and check the screen brightness control.

Way 2 : Uninstall or Disable monitor device and restart your computer

Step 1 Right click the start button and choose the device manager option.

open device manager

Step 2 Open the monitors tree and find your dispaly device.

Step 3 Right-click it and choose Uninstall or Disable option.

disable or uninstall your display device

Step 4 Restart your computer and check the screen brightness control.

Way 3 : Update the driver of your display device.

Step 1 Follow Way 2 until you find your display device.

Step 2 Double click it and find the driver option.

find the driver option

Step 3 Click "Update driver", you can choose update your driver automatically or manually.

update driver option

update manually or automatically

Step 4 Restart your computer and check the screen brightness control.

Way 4 : Adjust brightness from display card control panel.

Step 1 Right click your desktop and choose your display card control panel. (this image use NVIDIA as example)

open display card panel from desktop

Step 2 Find the display settings and you can control the brightness here.

adjust brightness form display card control panel

This post shares 4 ways to bring your brightness control bar online. We hope you can share it with others. Thank you for reading!

bring brightness bar online

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