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Zbook - windows10 - Display brightness settings ( slider) not working

HP Recommended
ZBook 15u G6
Microsoft Windows 10 (64-bit)

Product -  HP ZBook 15u G6

windows 10 64 bit  1909 (10.0.18363)


Screen brightness is too high. I can't able to control brightness either from keyboard hot keys or via windows 10 brightness slider. it seems to be not working. Have updated the display drivers, but still no luck. I tried to search the similar issue tickets and tried the solution provided, but still not luck. 

Need help hear and brightness is too high to work.

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HP Recommended

Make sure you update the BIOS and drivers, and install (update) the HP Hotkeys utility via its softpaq... You can use HP Image Assistant to help you

I work for HP. However, all opinions and comments are my own.
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