hp - Disable Numlock notification

On my HP Elitebook 8570W I always get the notifications about chaning NumLock status. This is especially annoying when switching between VMs and the host.

I have tried:

• There is no tray icon which has options to influence this behavior. Also no hidden ones
• There is no tab in Control Panel / Keyboard
• There is no other item (e.g. HP specific) in Control Panel

Using Process Explorer and dragging the crosshair over the notification window, you can find:

• The program started when pressing NumLock is hpCaslNotification.exe from %Program Files (x86)%\Hewlett-Packard\Shared
• The parent process is QLBController.exe from %Program Files (x86)%\Hewlett-Packard\HP Hotkey Support

Using Autoruns you find that QLBController.exe is started from Registry at HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

So there are the following options:

• You can rename hpCaslNotification.exe so that it cannot be started any more. This will prevent notification from being displayed.
• To temporarily disable the notifications, you can kill QLBController.exe in Process Explorer.
• To permanently prevent QLBController.exe from running, delete the Registry entry or removing the checkmark in Autoruns.