Turn on NUM LOCK when you start Windows

To enable NUM LOCK before a user log on, perform the following steps.Here's how to turn on the NUM LOCK key when you start Windows.


1. Restart or turn on your computer
2. on the login screen, make sure that the Num Lock led is lit. If not press the Num Lock key to turn on the led.
3. Restart the computer without logging on.

If you have not solved try the following:

1. Run Registry Editor (Regedt32.exe).
2. navigate to HKEY_USERS\.Default\Control Panel\Keyboard.
3. change the value for InitialKeyboardIndicators from 0 to 2.

Source: http://support.microsoft.com/kb/154529