System Turn On or Off Content Adaptive Brightness Control in Windows 11


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brightness_banner.png

Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions.

Some Windows 11 PCs can automatically adjust the screen brightness and contrast based on content that’s displayed on your built-in screen. For example, if you’re watching a video that has a dark scene, followed by a brighter scene (for example, one that shows a bright sunny day), the brightness and contrast may change. This is normal.

Content adaptive brightness control (CABC) provides ideal brightness and contrast levels, while saving power and providing longer battery life at the same time. If these sudden brightness changes are distracting, or if you work in photo and video apps where color accuracy is important to you, you can turn this off any time. When you turn it off, it can result in shorter battery life.

This tutorial will show you how to turn on or off Content Adaptive Brightness Control (CABC) for all users in Windows 11.


Display brightness is automatically reduced by 30% by default when using battery saver.



Contents

  • Option One: Turn On or Off Content Adaptive Brightness Control in Settings
  • Option Two: Turn On or Off Content Adaptive Brightness Control using REG file





OPTION ONE

Turn On or Off Content Adaptive Brightness Control in Settings


1 Open Settings (Win+I).

2 Click/tap on System on the left side, and click/tap on Display on the right side. (see screenshot below)

CABC_Settings-1.png

3 Click/tap on Brightness on the right side to expand it open. (see screenshot below step 4)

4 Check (on - default) or uncheck (off) Help improve battery by optimizing the content shown and brightness for what you want. (see screenshot below)

CABC_Settings-2.png

5 You can now close Settings if you like.





OPTION TWO

Turn On or Off Content Adaptive Brightness Control using REG file


You must be signed in as an administrator to use this option.


1 Do step 2 (on) or step 3 (off) below for what you would like to do.


2 To Turn On Content Adaptive Brightness Control

This is the default setting.


A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Turn_ON_Content_adaptive_brightness_control.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers]
"DisableCABC"=dword:00000000

3 To Turn Off Content Adaptive Brightness Control

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Turn_OFF_Content_adaptive_brightness_control.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers]
"DisableCABC"=dword:00000001

4 Save the .reg file to your desktop.

5 Double click/tap on the downloaded .reg file to merge it.

6 When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

7 You can now delete the downloaded .reg file if you like.


That's it,
Shawn Brink


 

Attachments

  • Brightness.png
    Brightness.png
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  • Turn_OFF_Content_adaptive_brightness_control.reg
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  • Turn_ON_Content_adaptive_brightness_control.reg
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