Whether you are trying to dim your screen to save battery life in a coffee shop or brighten it to combat glare outdoors, the brightness keys are essential tools. This guide covers how to identify them, use them across different operating systems, and fix them when they stop working.
Try these solutions in order:
A "Display Adapter" or "PnP Monitor" update in Device Manager usually fixes it. brightness key on keyboard
Press Win + A to slide out the brightness slider. Whether you are trying to dim your screen
Press Win + X , then select B to open settings instantly. Standard Keys: Use F1 (Decrease) and F2 (Increase). use them across different operating systems