Adjusting your monitor brightness is an essential part of any setup. However, certain bugs can prevent you from doing this, and the most common bug in Windows 11 is the grayed out brightness slider. When you encounter this bug, you won’t be able to change your display brightness using keyboard shortcuts, and the brightness slider in Action Center will be grayed out. This can be quite annoying and can interfere with your workflow. So, if you’ve encountered this bug, here’s everything you need to know about it and how to fix it on your PC.
Can't Adjust Brightness in Windows 11? Here's the Fix
There could be a number of reasons why the brightness slider is grayed out or missing on your PC. The most common reasons are listed below.
The most common bug that causes this issue is a bug with the driver for your dedicated GPU. This is usually caused when you update your PC to the latest Windows build without updating the dGPU driver to the latest version available. To fix this issue, you can either reinstall your driver or update it to the latest version available. Both seem to help fix the gray brightness slider.
If you are using a third party external monitor, chances are that the brightness is adjusted using the OSD and special keys. You may also have a remote control for the same to easily access the OSD on your monitor.
