Windows 10: Display Brightness levels adjustments occurs unexpectedly

Hi there!

Recently my display started to behave quiet unexpectedly. whenever I enter airplane mode/ connect my head phones/ enable or disable a network adapter/etc... the brightness level would change drastically. the brightness level indicator would not change but the actual brightness increases dramatically, even if it was at 100%. it's not eye-hurting but it is very noticeable.

I couldn't isolate the main cause of this issue.

Also, the night light feature sometimes fails to work properly,


I tend to put my pc to sleep and would only shut it down every 3~5 days.

any ideas? (running Windows 10 1903) /had this issue with the previous build as well

HP Probook 450 g4

:)

 

Brightness Level Adjustment Issues

Cannot adjust brightness after upgrading to mobile build 10586.218. Same brightness, all the time. Will not change brightness level from either Action Center or Display settings. Does anyone know if there is a workaround for this?

 

Can't adjust Display brightness

Hi Lokesh,



Thank you for your interest in Windows 10.

We understand that, you face issues with display brightness dysfunctional on Windows 10 and I'd be certainly help you.

For a better clarity of your issue, please answer these queries below:

• 
  What is the make and model of the computer?
  
• 
  What is the make and model of the keyboard?
  

This issue could have occurred due to these reasons.

1. Incorrect settings.

2. Corrupt or outdated display and keyboard drivers.

Please refer to the article, created by Akheel Ahmed replied on October 28, 2015, to fix your issue with Display brightness dysfunctional on Windows 10.

Brightness Adjustment

Also refer to the Microsoft article link below and check, if it helps.

http://windows.microsoft.com/en-us/windows/adjust-monitor-brightness-contrast#1TC=windows-10

I suggest you to update the keypad drivers from the manufacturer's support website and check, if it works.

Please feel free to contact us, if you face any issues with Windows.



Thank you.

 

Manually Adjust The Minimum Backlight Brightness on Windows 10 Desktop

We appreciate your response. There are 4 methods on how you can adjust the screen brightness in Windows 10. To address your issue, we suggest that you follow these methods below which you're not done yet:

Method 1: Adjust screen brightness using hotkeys:

• Press Fn + F5/F6 can be used to adjust the screen brightness.
• Look at your keyboard to see brightness symbol on Function keys.

Method 2: Use Action Center to display brightness in Windows 10

• Click on the Action Center icon in the taskbar to reveal the Action Center pane.
• Click on the brightness tile to increase/reduce the display brightness. If you can’t see the brightness tile, click
  Expand button.
• Clicking on the brightness tile once will take the brightness to the next level. For instance, if you click on the tile when the brightness is at 25%, the brightness will be increased to 50%. Once the brightness is reaches 100%, click on the tile again
  to start from 0%.

Method 3: Use settings to adjust screen brightness in Windows 10

• Open Settings by clicking on its icon in the left side of the Start menu.
• At the home page of Settings, click System.
• You should now see Adjust brightness level option with a slider to adjust the display brightness. If you can’t see the option, click on Display (Settings > System > Display).

Method 4: Use Control Panel to adjust brightness in Windows 10

• Right-click on the battery icon in system tray of taskbar and then click
  Adjust screen brightness option to open Power Options window.
• At the bottom of the screen, you should see Screen brightness option with a slider. Move the slider towards the left of the screen to reduce the screen brightness and towards to the right to increase the brightness.

Let us know if you need further assistance.