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‎01-15-2022 07:17 AM - last edited on ‎01-17-2022 11:38 AM by

HP Recommended
Operating System: Microsoft Windows 10 (64-bit)

Hi, I have an issue with my HP EliteBook 840 G6: the brightness keys F3 and F4 don't work. Other keys such as MUTE, Volume Up, Volume down, Numlock, WiFi (Airplane mode) toggle work fine, including an OSD bar.
My system is Windows 10 x64 21H2 with the latest BIOS.
So far I have tried:
Disable/Enable PnP monitor in Device manager
Unistall/Install display adapter drivers
Update all the possible drivers (incl. the graphics driver)
Also installed these from hp support page
- HP Collaboration Keyboard Software
- HP Support Assistant
- Essential System Updates for Microsoft Windows 10
- HP Application Enabling Software Driver

Went through various support forums and tried to find HP Hotkey Support Driver. Currently, there's no such thing as HP Hotkey Support for my laptop, in fact it seems that hp removed this driver from their website completely for any hp laptop.

 

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