Windows 10: Display Brightness Automatically Changing.

Discus and support Display Brightness Automatically Changing. in Windows 10 Graphic Cards to solve the problem; So, Posting here because I'm unsure as to whether this is Intel Software, Hardware, Mobo, Display, OS or Driver related. I've trawled Google and... Discussion in 'Windows 10 Graphic Cards' started by adz7, Nov 29, 2019.

  1. adz7 Win User

    Display Brightness Automatically Changing.


    Posting here because I'm unsure as to whether this is Intel Software, Hardware, Mobo, Display, OS or Driver related.

    I've trawled Google and tried multiple fixes but I still have this strange issue. For no rhyme or reason my display has been automatically adjusting itself aggressively when I switch between explorer windows, the desktop, chrome tabs or even scrolling down web pages (appears to dim more when the screen has lots of white and text, then brightness picks up with more graphics or images on the page). My PC is connected by HDMI 1.4 to my LG OLED, I have even rest the TV to Factory Default and it's still doing it. I've also tried Edge just to rule out a Chrome specific problem and it still does it.

    I have had this issue before on an Dell laptop and that's when I first discovered 'Adaptive Brightness' so that was my first instinct. However I'm on a desktop PC not a laptop so I have no battery or power options for that available.

    I then started hunting through the Intel Graphics software for any power saving options, nothing.

    Under services.msc I located 'Display Enhancement Service' and 'Sensor Monitoring Service' and disabled both of those.

    I'm stumped - if I have no Adaptive Brightness option, no adaptive contrast option, no GFX power saving options, no 'Adjust video based on lighting setting' - how do I fix this?
    I've also tried to reinstate the Adaptive Brightness option so I can disable it as directed in this link but still no joy: Enable or Disable Adaptive Brightness in Windows 10

    I have the latest OS updates, Chrome and GFX drivers installed. The OLED TV power saving is all switched off and it doesn't do this when watching discs or cable.

    Probably doesn't help much as the phone camera doesn't detect it very well but here is a short video of the issue:

    Any help would be much appreciated.


  2. Brightness changing problem


    Changing the screen brightness on your laptop can be adjusted by going to
    System > Display
    where you can use the slider to adjust the brightness. If your PC supports, you may also let Windows to automatically adjust the screen brightness according to the current lighting condition by enabling
    Change brightness automatically when lighting changes.

    If you've already the tried the suggestions above but the screen brightness still doesn't change, then we suggest updating the display drivers. Please see

    Update drivers in Windows 10
    for the steps on how to update the drivers.

    Feel free to let us know if you need further assistance.

    Vanessa Yar, Nov 29, 2019
  3. screen brightness on windows 10


    Some computers can let Windows automatically adjust screen brightness based on the current lighting conditions.

    To manually adjust the screen brightness, we suggest following these troubleshooting steps:

    • Click Start, then select Settings.
    • Choose System, then select Display.
    • Under Brightness and color, move the Change brightness slider to adjust the brightness.

    Feel free to post back if you have other concern.
    Gerard Qui, Nov 29, 2019
  4. Display Brightness Automatically Changing.

    automatic brightness in Microsoft Lumia 950XL

    The red light is for the face / iris sensor. To know more about Windows Hello and Privacy, you can refer on this


    For the brightness issue that you're experiencing, we suggest that you follow the steps given below:

    • Turn Off Automatically adjust display

    • Perform a soft reset to refresh your device. Press and hold Volume Down+Power
      button until phone vibrates and restarts.
    • Turn On Automatically adjust display brightness again.

    If issue still persist, your device light sensor maybe malfunctioning and may require repair/replacement.

    Update us on the result.
    Timoteo IV Ofr, Nov 29, 2019

Display Brightness Automatically Changing.

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