NumLock

[stuartd]

So, if NumLock is disabled and it has the wrong value, then that's a pain.

This is why KeyMapper has 'Toggle Lock Keys':

It turns out there is another registry key which controls the startup setting of NumLock:

On:

[HKEY_CURRENT_USER\Control Panel\Keyboard]
"InitialKeyboardIndicators"="2"

Off:

[HKEY_CURRENT_USER\Control Panel\Keyboard]
"InitialKeyboardIndicators"="0"

[stuartd]

The option then is when the user disables num lock, and an option (or ask) whether they would like to force a value when WIndows starts