After playing MM6 for several hours I have encountered a problem/bug that makes the game unplayable. I am playing MM6 on a MSI wind minilaptop where I have to use the Fn-key in combination with the arrow-keys to fly or look up/down. For example Fn + up = Page Up (fly up). But now the game act as if Fn is constantly pressed so I can't use the arrow-keys to walk around. I have tried to close the game and restart, restarted the computer and I have made sure that there is nothing wrong with the keyboard or the Fn-button.
Please I need help!

Thats got something to do with the numlock key, try pressing numlock on its own and seeing it it reverts back. If not then you make have to try a few combinations to find which works with your laptop.
Try:
Fn key and numlock held down at the same time or Fn key, numlock and ctrl.