How can I prevent the screen's brightness and contrast from changing automatically in certain situations? IntroductionThere are a number of options that can cause the brightness to be automatically reduced or changed in certain situations. Some of these options reduce the brightness when the battery is particularly low. Other options control the brightness dynamically depending on the screen content, but with a slight time delay, which can sometimes be irritating when switching between bright and dark content.Automatic brightness control can also be a hindrance when calibrating displays via colorimeter and in standardized battery life tests.Available optionsThe following list shows all currently known options that can have an automatic influence on the screen brightness. It should be noted that some of these options only appear when the corresponding menu segment is unfolded. Which of these options appear also depends on the installed hardware.Windows 11: Option #1: System → Power & battery Option #2: System → Display Option #3: System → Display → HDR Intel Graphics settings:System → PowerAMD Graphics settings:Display → Display OptionsRecommendationWe recommend to disable these options and to manually reduce screen brightness via the corresponding Fn hotkey when operating in battery mode.