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 modifying other settings, the Brightness Control Key Not Working problem may occur in Windows 10 and Windows 11. In this article, I will describe some of the most effective ways to fix brightness issues on laptops from manufacturers such as ACER, LENOVO, DELL, ASUS, SONY, and more.

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Method 2: Update Windows 10 Display Driver

When dealing with any display-related issues in Windows 10/11, updating the display driver should be your first choice. Thankfully, updating the Windows 10 display driver is a straightforward process using the Device Manager panel. To check for outdated drivers and update them, follow these simple steps:

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

The most common reason for the “Brightness control not available” problem is the lack of a compatible driver. It could be because you haven’t installed the correct driver or your current driver software is corrupted or damaged. In either case, the simplest solution is to install a fresh version of the driver, which should easily resolve this error.

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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

Enable: powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 1
Disable: powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

Plugged In:

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

Summary

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.