How To Turn Down Brightness On Windows 11 New! Jun 2026

If you are using a desktop PC with an external monitor, you may notice that the brightness slider in Windows 11 is greyed out or missing entirely. This is normal; Windows usually cannot control the brightness of external monitors directly via software.

: While not a direct brightness control, the Night Light feature reduces blue light to help with eye strain in dark environments. You can toggle this from Quick Settings or the Display settings menu. External Monitors and Troubleshooting how to turn down brightness on windows 11

: If your device has an ambient light sensor, you can enable "Change brightness automatically when lighting changes" in the Display settings to let Windows handle adjustments for you. If you are using a desktop PC with

: Click the Network, Sound, or Battery icon in the bottom-right corner of your taskbar (or press Win + A ). Use the Brightness slider at the bottom of the menu to drag left and lower the light intensity. You can toggle this from Quick Settings or

Here’s a clear, step-by-step guide to turning down brightness on Windows 11, including multiple methods so you can choose the one that works best for you.

For most users, the is the fastest way to dim your screen. However, if you need automatic adjustments or want to reduce blue light, the System > Display settings menu is the best place to go.