4 Methods to Fix Brightness control not working in Windows 10/11

Most of the time after installing or uninstalling software, changing PC configurations, editing the registry or other settings, cause Brightness Control Key is Not Working problem in Windows 10 and Windows 11. Here, in this article, I will describe some of the most effective ways to fix brightness issues in ACER, LENOVO, DELL, ASUS, SONY, etc laptop.

Method 1: Fix using Advanced System Repair Tool

Most of the time the problem persists because of corrupted or damaged system files, changes in system configuration files, outdated drivers, misconfigured registry files, etc. You can use Advanced System Repair Tool to fix all these problems with just in a single click.

Windows is made with huge number of dll files, exe files, sys files, various types of services, databases, etc so, it is not possible to keep monitoring all the files always. A brilliant PC Optimizer tool repairs damages, fix errors, update windows and drivers, and eliminate various types of errors silently.

Outbyte PC Repair Tool does all the above task easily and provides you an errorfree and smooth Windows environment to work so that you can focus on your business only.

3 Steps to Fix this Error
Step 1. Download Outbyte PC Repair Tool [File Size: 16.4 MB]
Step 2. SCAN your Windows PC
Step 3. Click Fix button to Repair Error

Method 2: Update Windows 10 Display Driver

This may be the first choice when going to fix any Display related issues in Windows 10/11. Updating Windows 10 display driver is not a big issue when you use the Device Manager panel. Apply the following steps in order to check outdated drivers and update them.

Step 1: Open Device Manager. Click on Start Menu and search for Device Manager and open it.


Step 2: Expand Display Adapters and right-click on your graphics driver and select Update Driver.


Step 3: Click on Search automatically for drivers. You must keep connected your PC to the Internet.


Step 4: It will find the latest version for your graphics driver. If the latest version of the driver is already installed, it will show you the following message.


Step 5: If you want, you can update the driver through Windows Update. Just click on “Search for updated drivers on Windows Update”.


Step 6: It will open windows update settings to update windows and all its associated drivers along with the graphics card driver.

Method 3: Maybe Driver is not installed

Most commonly this Brightness control not available problem happens due to the unavailability of a correspondence driver. Either you haven’t installed the correct driver, or your driver software is corrupted or damaged. In both cases, installing a fresh version of the driver may fix this error more easily.

Step 1: Find your Laptop/PC Motherboard name and PC model number.
Step 2: Go to the official site of that motherboard.
Step 3: Download all the corresponding drivers and install it.
Step 4: Reboot your PC.

Method 4: Enable Adaptive Brightness

Adaptive Brightness is a feature in Windows 10/11 that automatically adjusts the brightness according to your outer lighting condition.

Note: You will get lots of articles telling you how to enable or disable adaptive brightness settings in Windows 10/11 but when you will go for finding that option in your PC, you will not get the option to enable or disable adaptive brightness settings in your PC. This is because this feature has been removed with 1809 updates. So, the new way to enable or disable adaptive brightness is as follow:
Trick 1: Using Intel Graphics Command Center

You can enable or disable this feature using Intel Graphics Command Center.

Step 1: Launch Intel Graphics Command Center. Either right-click on the desktop and choose Intel Graphics Settings or Go to the Start menu and search for Intel Graphics Command Center.


Step 2: Click on System Icon in the left side and then select Power Option. Here, you can enable or disable adaptive brightness settings by enabling or disabling the “Display Power Savings” Option.


Trick 2: Using Command Prompt

You can also change these settings using the command prompt. If you are not getting an option anywhere in system settings to change adaptive brightness settings, then you can just do it using the command prompt.

Step 1: Open Administrative Command Prompt.


Step 2: Copy and Paste the suitable command below and press enter to execute.
On Battery
powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 1

powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

Plugged In:
powercfg -setacvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 1


powercfg -setacvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

Step 3: Execute the command below to save settings.

powercfg -SetActive SCHEME_CURRENT


In this article, I have explained the 4 unique ways to fix brightness control not working in Windows 10/11. You can resolve this issue by either updating/installing the driver or changing some system graphics settings.