How To Turn Off Automatic Brightness Windows 10 [Tutorial]

Command Prompt Commands (Use two commands depending on what you are trying to do):

Enable – On battery
powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 1

Enable – Plugged in
powercfg -setacvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 1

Disable – On battery
powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

Disable – Plugged in
powercfg -setacvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

You probably need to change your screen brightness regularly. When it’s bright outside, you want to turn it up so you can see. When you’re in a dark room, you’ll want it dim so it doesn’t hurt your eyes. Decreasing your screen brightness will also help save you power and increase your laptop’s battery life.

Displays (especially on laptops and tablets) may utilize ambient light sensors to detect surrounding levels of light.

The adaptive brightness feature in Windows monitors ambient light sensors to detect changes in ambient light and automatically adjust the display brightness as needed to match surrounding lighting conditions.

While adaptive brightness is useful to help save battery life, it may at times cause your display brightness level to be too dark.

This tutorial will show you different ways on how to enable or disable adaptive brightness in Windows 10.

Aside from manually changing the screen brightness, you can have Windows change it automatically in a variety of ways. Windows can change it based on whether you’re plugged in, based on how much battery power you have left, or using an ambient light sensor built into many modern devices.

This tutorial will apply for computers, laptops, desktops,and tablets running the Windows 10 operating system (Home, Professional, Enterprise, Education) from all supported hardware manufactures, like Dell, HP, Acer, Asus, Toshiba,Lenovo, and Samsung).

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