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Some users reported that they come across the error of Windows 10 brightness slider missing.

What Causes Windows 10 Brightness Slider Missing? In addition, you can visit MiniTool to find more Windows tips and solutions.

Change the value of the parameter FeatureTestControl from f000 to f008.What causes the error of Windows 10 brightness slider missing? How to fix the issue of Windows 10 no brightness slider? This post from MiniTool will show you the solutions.

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\\0000

Open the Registry Editor (regedit.exe).

The following method implies registry editing: Fix Screen Brightness Control Bug Using KMD_EnableBrightnessInterface2 If the automatic driver update didn’t fix the problem, try removing the current driver and installing the latest driver version from the manufacturer’s website. Then select Search automatically for updated driver software and wait till Windows 10 finds and installs the latest driver version (of course, your computer has to be connected to the Internet). Right-click it and select Update Driver Software. In the Device Manager (the same devmgmt.msc console) expand the Display adapters section and find your graphic card.

If the previous method didn’t help, try to update your graphic card driver automatically (if the automatic driver update is not disabled). First check if your display adapter is enabled in the device manager (similar to the method above). Perhaps the problem with the brightness is related to the current graphics card driver. Restart your computer and try to adjust the screen brightness. According to information from Microsoft, it fixes the problem with brightness control on laptops with Windows 10 1803: If the brightness adjustment issue occurs immediately after upgrading to Windows 10 1803, try to install the last cumulative update KB4284835 (OS Build 17134.112, June 12, 2018). There are simpler solutions for Windows 10 1803. Also it is impossible to change the brightness using the keyboard’s function keys.Īlmost in 100% of cases, the rollback to the previous Windows 10 build (1709) helps to solve the problem with the display brightness. Brightness control doesn’t work and is stuck at max level at any position of the brightness slider in the settings. Some users are faced with the fact that after updating to the latest Windows 10 build (1803 April Update) they can’t change the screen brightness on many laptop models. Unable to Adjust Screen Brightness after WindApril Update

Unable to Change Brightness on a Laptop with Intel HD Graphics.

Screen Brightness FN Keys Not Working on Laptop.

Can’t Adjust Brightness after Installing TeamViewer.

Switching to the Microsoft Basic Display Adapter Driver.

Fix Screen Brightness Control Bug Using KMD_EnableBrightnessInterface2.

Unable to Adjust Screen Brightness after WindApril Update.