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.
Method 1: Fix using Driver Updater Tool
The majority of Windows issues arise from corrupted, outdated, missing, or incompatible drivers. However, with DriverEasy, these problems can be effortlessly resolved. DriverEasy automatically scans, installs, or updates drivers, ensuring that your system remains up-to-date and optimized.
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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 To check for outdated drivers and update them, follow these simple steps:
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.
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.
You can enable or disable this feature using Intel Graphics Command Center.
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.
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
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
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.