How To Disable Auto Brightness In Windows 8.1

Automatic brightness or adaptive brightness is one of the features introduced with Windows 8 to automatically adjust the screen brightness in real time on computers that ship with ambient light sensor. In simple words, this feature automatically updates the display brightness as ambient light changes.

Even though this is a fantastic feature for users who prefer to automatically update the display brightness, it has its shortcomings too. One of the biggest annoyances of this feature is that you can’t see the screen under low light condition. In fact, if you turn on your PC during night or in a dark room, you won’t be able to view the contents on the screen.

Windows 8.1

When you move your laptop to a place with low light condition, you can’t see the contents on the screen. Even though you can quickly increase the brightness with the help of hotkeys on the keyboard, Windows will automatically update it in a few seconds.

The other issue is that Windows will keep on changing the screen brightness to match the ambient light. This can be frustrating at times. Fortunately, there is an option to turn off this feature in Windows 8 as well as in Windows 8.1 without having to install third-party tweaking tools.

The option to turn off automatic brightness or adaptive brightness doesn’t appear under display settings, and is buried deep under power options. So complete the below mentioned steps to turn off automatic brightness feature in Windows 8 and Windows 8.1.

Step 1: Click the battery icon in the system tray of taskbar and then click Adjust screen brightness option to open Power Options window. If you can’t see the battery icon in the system tray, you can open Power Options window by opening Control Panel, clicking Hardware and Sound, and then clicking Power Options.

Disable Auto Brightness in Windows 8.1 Step1

Step 2: Here, next to your currently active power plan, you’ll see Change plan settings option. Click Change plan settings next to your current power plan to open Edit Plan Settings window.

Important: Please note that this will disable auto brightness for your currently active power plan only. You need to follow these steps again in order to disable automatic brightness for another power plan as well. If you have more than two power plans, repeat the procedure again for all power plans.

Disable Auto Brightness in Windows 8.1 Step2

Step 3: Click Change advanced power settings option. This will open Power Options dialog.

Disable Auto Brightness in Windows 8.1 Step3

Disable Auto Brightness in Windows 8.1 Step4

Step 4: Expand Display and then expand Enable adaptive brightness. Change it to Off for both Plugged In and On Battery options. Click Apply button. That’s it!

Disable Auto Brightness in Windows 8.1 Step5

As we mentioned earlier, this will disable the adaptive or auto brightness for the selected power plan only. Repeat all steps and select another power plan in Step 2 to disable this feature for that power plan as well.



  1. ilantamizhan says

    Over brightness is over affect in eyes. I am also same problem….night time is I cannot use the phone at the same time my phone brightness is low but I cant use windows Lumia 535…

  2. Dennis says

    Adjusted these settings, but also the dimmed brightness to 100% in Windows 10 and my screen magically brightened up…. Thanks for this pointer, but to make it work on an Samsung ATIV Pro 9 I needed to adjust the dimmed brightness as well…

  3. Gavin says

    I found another solution for my Lenovo IdeaPad P400 Touch running Windows 8.1. You have to re-install an older graphics driver. Go into the \drivers subdirectory in your root directory, and look for the subdirectory that has the Intel VGA x64 drivers. (The path on my machine was \drivers\Intel Video Driver (64-bit)\Setup.exe.). Run Setup and say “yes” when asked if you want to replace the newer driver. Ta-da!

  4. Jamie says

    Its set in the BIOS. If it worked before and suddenly doesn’t now, chances are your Intel BIOS firmware was updated automatically. By default the ambient sensor in the Bios (under Boot Settings), is set to ON. Switch it to OFF. The adaptive brightness option can then be toggled normally within Windows.

  5. Charlie says

    Adaptive brightness on a Lenovo Yoga 2 Pro may still be functioning after turning it off in the usual windows power management options.
    There may be a Lenovo power management module that also needs to be dealt with.

  6. Anthony says

    Still have the same issue after completing the instructions. I even disabled de sensor monitoring device, and the auto brightness still work.

  7. mark says

    followed all of the above, but stilll no control over brightness, keyboard brightness buttons dont work, and theres is definately no brightness adjustment bar like in your pics above, battery about to die so cant right anymore

  8. Danny says

    I’m having the same problem, and apparently, so does almost everyone who has updated to 8.1. My screen brightness has been set to max, all auto brightness has been turned off, but my screen is still dark. I’m also running a Samsung ATIV Book 8.

  9. Taelynn says

    Hey, thanks for the instructions, however all of my power settings were already like that and I still have no control over my screen brightness, it is always just dark. I am running a Samsung ATIV Book 8, just got it last week, this is pretty frustrating

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