Somehow I pressed accidentally a key combination such that the 'num key' was always activated (the light on the num key was always on). I could not find a way to deactivate the num key afterwards. Furthermore the keyboard was not working anymore. I had to turn off the computer by keeping the turn on button pressed for a longer time.
Since this happened now for the second time could you tell me how I can avoid this? Is there any key combination which I can press to deactivate the "permanant activated num key"?
