Screen Brightness Changes when Connecting External Monitor or Changing Display Settings on Windows11

Question

(I posted this a while ago but no one answered, hence I will post it again!)

Hello everyone,

Video links of issue:

https://drive.google.com/file/d/17FR4ZdeHKRxp5tFdpOVnSBTAMG3Shump/view?usp=sharing

https://drive.google.com/file/d/1f4g9KInXzW8ToQ4NkG9h17yXsGytCXYt/view?usp=sharing

I own a Lenovo Legion 5 15ARH05H. I've had this issue for a while on Windows 11 and I had hoped that the issue would fix itself through the cumulative updates. Basically, my issue is the screen brightness on my computer changes whenever I connect an external monitor to it. This is extremely annoying because I frequently connect and disconnect my external monitors to and from my laptop. It sucks that I have to readjust my screen brightness over and over again. Recently, I have downgraded to Windows 10 and the issue did not arise while using, however, the second I upgraded to Windows 11 is when the issue popped up.

Any ideas on how to fix this would be appreciated!

Answer 1

Hi Laster. I'm Greg, 10 years awarded Windows MVP, here to help you.

1. The Display driver is so important here that merely updating it is sometimes not enough. So let's try everything possible to get it working correctly:

First make sure you have updated the Display driver from the PC or Display adapter maker's Support Downloads web page for your exact model number, HP Serial Number or Dell Service Tag - from the sticker on the PC.

If necessary first remove the old driver using DDU https://www.wagnardsoft.com/content/ddu-guide-t... (not necessary with Microsoft Basic driver which is a placeholder if nothing else is available) and/or installing in Safe Mode with Networking (so you have internet), or Safe Mode, accessed by one of these methods: https://www.digitalcitizen.life/4-ways-boot-saf...

While there check also for newer chipset, BIOS/UEFI firmware (very important), network, sound, USB3 and other drivers, comparing to the ones presently installed in Device Manager reached by right clicking the Start Menu.

If this doesn't give you the latest or ideal driver for what you need, compare it to the driver offered by the Intel driver update Utility here: http://www.intel.com/content/www/us/en/support/...

or the Nvidia Update utility here: http://www.nvidia.com/Download/Scan.aspx?lang=e...

or the AMD autodect utility here: http://support.amd.com/us/gpudownload/windows/P...

For Display issues one fix that is working is to Roll back or Uninstall the Driver on the Display Device > Driver tab, restart PC to reinstall driver.

You can also try older drivers in Device Manager > Display device > Driver tab > Update Driver > Browse > Let Me Pick.

Then you will know you've tried everything in addition to Windows Update drivers.

Adjust the screen resolution until it fits and looks best at Settings > System > Display.

Check for a monitor driver by expediting Windows Updates (including Optional Updates) in Settings > Update & Security > Windows Update > Check for Updates to install all Updates until no more are offered.

2. Try these fixes for Windows 11 brightness issues:

https://support.microsoft.com/en-us/windows/cha...

https://www.guidingtech.com/top-ways-to-fix-bri...

https://windowsreport.com/brightness-not-workin...

(Avoid ad links which intrude into editorial copy, especially avoid Restoro, PC Repair Tool and Reimage ads)

https://www.makeuseof.com/windows-11-missing-br...

https://appuals.com/brightness-not-working-wind...

(Avoid ad links which intrude into editorial copy, especially avoid Restoro, PC Repair Tool and Reimage ads)

https://www.youtube.com/watch?v=cPUqTnTbxOE&amp...

3. You may be able to help Microsoft improve this product/experience by using the Feedback Hub, especially if you are comfortable with sharing relevant data and screen recordings. Microsoft developers DO read feedback from customers that comes in via the Feedback Hub, so that is a great way to share your thoughts on how to better serve you as a customer.

Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.

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