TrueCrypt - With no NUMLOCK activation on Keyboard

Hi -

I encrypted my whole disk drive with TC, now my NUMLOCK LED light at the right (Number Pad) above does not want to light up and is not activated. So I have to use the upper numbers below the Function Keys to enter my password. I am used to using right numeric pad at the right of my keyboard. Now the only way I can do this, is by pressing the NUM LOCK key, but still, its very annoying since Im used to entering numbers using the numeric key pad without having to manually press the NUM LOCK key.

This only occurs during the password prompt in the TC boot loader. But once booting into Windows, the NUM LOCK is working fine automatically.
I suspect that the TC Boot Loader does not detect some keyboard driver components. But its just a wild guess.
How can I solve this?

Also, I would ask this in the TC forums, but they do not accept email registers from web-based emails.

Thanks in advance.