Windows 11 often installs a "Generic PnP Monitor" driver. However, ASUS panels sometimes require the specific manufacturer driver to enable DDC/CI (Display Data Channel) communication, which allows software to control hardware brightness.
Click the battery/Wi-Fi icon in the taskbar. Try dragging the brightness slider manually. If the slider is missing entirely, you likely have a driver issue. asus laptop brightness not working windows 11
Always create a system restore point before making driver or registry changes. Brightness issues in Windows 11 on ASUS laptops are almost always software-related, so one of these fixes should restore normal functionality. Windows 11 often installs a "Generic PnP Monitor" driver
Most brightness issues stem from the or AMD Radeon drivers. Right-click the Start button and select Device Manager . Expand Display adapters . Try dragging the brightness slider manually
If updating doesn’t work:
Open the MyASUS app (pre-installed or available on the Microsoft Store). Go to Customer Support > LiveUpdate .