The status of the NUM LOCK key is specific for each user, and NUM LOCK is disabled by default. If you want the NUM LOCK key enabled for use before a user presses CTRL+ALT+DEL to log on, you must use Registry Editor to change the default behavior.
To enable NUM LOCK before a user logs on, follow these steps:
1. Run Registry Editor.
2. Move to HKEY_USERS\.Default\Control Panel\Keyboard.
3. Change the value for InitialKeyboardIndicators from 0 to 2.
