How To Change Brightness on an External Monitor in Windows 11 (2025) | Easy Monitor Control Guide

00:00 – Intro 00:10 – How To Change Brightness On External Monitor In Windows 11 If your external monitor looks too bright or too dim, this tutorial shows you how to change the brightness on an external monitor in Windows 11 in 2025. Windows doesn’t control brightness on most external screens by default, but there are quick ways to adjust it using monitor buttons and software tools. Start by using the monitor’s built-in buttons. Every external display has physical controls on the bottom, side, or back. Press the Menu or Settings button to open the on-screen display and adjust the Brightness slider. If you want to control brightness directly from Windows 11, download a free app like Monitorian or use the built-in Display settings on supported monitors. Open Settings → System → Display and look for Brightness under External Display. This option appears only for monitors that support DDC/CI control. Make sure DDC/CI is turned on in your monitor’s menu so Windows can adjust its brightness. If brightness controls aren't available, update your graphics drivers or restart both the PC and monitor. HDMI, DisplayPort, or USB-C cables all work differently, so switching to a different cable may also help Windows detect brightness controls. #Windows11 #MonitorBrightness #ExternalMonitor #HowToFix #DisplaySettings #PCGuide #TechTutorial