Screen brightness keys do not work

[TadekZ]

Hi,
Screen brightness keys (Fn+F3/F4) stopped working. It was after installing updates (drivers, BIOS, hotkey etc.), Adobe Acrobat Reader and McAfee Total Protection. 

I will appreciate your help.

All the best,
Tadek

[EddyK]

Hi TadekZ,

Do the buttons not work at all or does solely pressing the F3 and F4 keys work?

Please enter the BIOS by repeatedly pressing F10 upon startup and locate the Action Keys under System Configuration. Make sure it's set to disabled.

More information here: https://support.hp.com/ca-en/document/c02035108

Regards,

kem579

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[Dreke68]

Same issue here.

F3&F4 not working. I also noticed that the mute (F8) was not working.

Following fixed it:

HP Hotkey Support: SP81790, Version 6.2.39.1 Rev.A

Dowloaded it from: 

https://ftp.hp.com/pub/softpaq/sp81501-82000/sp81790.exe

Hope this works for you.

[missyenny]

Your solution worked for me! Thank you so much!!

[GreatBobo]

I've solved this on multiple 830 G5 and 840 G5 laptops. They are running Windows 10 Enterprise 64-bit with update 1803 installed. I have installed the latest BIOS, HP Hotkey Support, AND the HP Collaboration Keyboard. It seems that the brightness Fn keys will only work after installing the collaboration software.

[djrules555]

Kindly restart and keep pressing bios. I think it needs a little boot up.