Monitor dimming, flickering when increasing brightness past 50% and then grows dimmer

[Moozer]

Probably since the latest AMD display adapter update, the screen brightness on this laptop won't surpass 50%. Instead of brightening, it starts dimming more and more, where 100% is similar to 0% (the most dim). In the process of attempting to get brighter past 50% the screen flickers (between different brightness levels, not ever going black).

The latest AMD display adapter driver is installed, the HP diagnostic tests all came back as good. Uninstalling display and display adapter to generic didn't help, nor reinstalling/updating. This system has the latest, patched Windows 11 x64.

Using funciton keys or the built in monitor brightness in Control Panel yields the same response.

AMD driver version: 31.0.14051.5006 from 4/20/23

[Rainbow23]

Hi @Moozer,

Welcome to HP Support Community. 
Thank you for posting your query, I will be glad to help you.

I see that you are facing display issues with your HP Pavilion Laptop PC 15-Eh0090wm.

I suggest that you check if the issue occurs on the BIOS screen by following the steps below.
1. Turn off the computer, press the power button, and then repeatedly press the Esc key until the Startup Menu opens. 
2. Press F10 to enter the BIOS Setup Utility.
3. Check if the screen issue persists.

You may also refer to the HP document from this link: https://support.hp.com/lv-en/document/ish_3900499-3190557-16 

I hope this helps.
Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

[Moozer]

Yes, it flickers on startup and in BIOS.

Do I assume that since the graphics are integrated that the entire main board needs to be replaced?

What is the board model?

Thanks.

[Rainbow23]

Hi @Moozer,

This could be a hardware issue with the unit and may need repair. 

I suggest that you contact HP Service Center in your location from this weblink: https://support.hp.com/us-en/help/service-center 
Note: Select your country from the dropdown,  enter the city or postal code, select the product, change the radius, and click on search to locate the nearest HP Service center near your location.

Hope this helps.
Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!