On the HP EliteOne 800 G1 Monitor buttons do not function when HP My Display is installed

[Ballsup]

Installing HP My Display appears to take over full control of the monitor brightness and does not allow the buttons on the monitor to function. 

Reading https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/800-AIO-Front-pane... appears to suggest that there is a registry key that can fix this, but unfortunately both the links listed appear to be broken.

If anyone knows what this registry entry is, then please could they post a reply. We have tried updated drivers etc. but the ideal solution is that both the software (HP My Display) and the Monitor Buttons could control the brightness (and volume)

Regards

Ben

[supersteve]

Hi There,

I am currently in the same boat...

I have a 800 AIO that I changed the registry settings on at work, if you can find the registry key for me I can export it and find the changes I made.

[supersteve · Accepted solution]

sp60481 worked for me, maybe give it a go.

the other thing to try is this (I think i did this on the 800 G1)

"cmd.exe /c reg.exe add "HKLM\System\CurrentControlSet\Services\i8042prt\Parameters" /v "Headless" /t REG_DWORD /d 1 /f"

ftp://ftp.hp.com/pub/softpaq/sp60001-60500/sp60481.exe

TITLE: HP All-in-One Panel Button Support for Windows

VERSION: 1.0 Rev. A
DESCRIPTION:
Fixes an issue in which Capsense buttons(mute, Mic, Vol Up and Vol Down) of 
your computer are not working after manually installing a retail version of 
Windows. 

This Softpag adds a registry setting to your Windows. The setting enables 
peripheral PS/2 devices like Capsense buttons to support hot-plugging - the 
device can be attached to a running computer and becomes usable without a 
reboot. 

PURPOSE: Routine
SOFTPAQ NUMBER: SP60481
SUPERSEDES: None
CATEGORY: Operating System - Enhancements and QFEs
SSM SUPPORTED: No

PRODUCT TYPE(S):
Desktops

HARDWARE PRODUCT MODEL(S):
HP Compaq Elite 8300 All-in-One PC
HP Compaq Pro 6300 All-in-One PC

SOFTWARE PRODUCT(S):
None

OPERATING SYSTEM(S): 
Microsoft Windows 7 32-bit
Microsoft Windows 7 64-bit
Microsoft Windows 8 32-bit
Microsoft Windows 8 64-bit

LANGUAGE(S): 
US English

ENHANCEMENTS: 
N/A

FIXES: 
Fixes an issue in which Capsense buttons (mute, Mic, Vol Up and Vol Down) of 
your computer are not working after manually installing a retail version of 
Windows.

PREREQUISITES: 
N/A

INSTALLATION INSTRUCTIONS: 
1. Download the file by clicking the Download or Obtain Software button and 
saving the file to a folder on your hard drive (make a note of the folder where 
the downloaded file is saved).  

2. Double-click the downloaded file and follow the on-screen instructions.


Copyright (c) 2013 Hewlett-Packard Development Company, L.P.

[Ballsup]

The "Headless" registry key did the trick beautifully. Many thanks