Key needs a lot of force to type (Samsung NC10)

I just gota samsung NC10.



It was working ok but now my P key hardly registers unless I press real hard in Samsung Laptop Keyboard .



I took the key button off as well as the O key to compare and have noticed that the P one has a clip/ bracket (I don't know the best way to describe this) slightly raised than the O key.



However there is no way to press it down or clip on to Samsung Laptop Keyboard .



I know this post is vague but any ideas?



When I get time I could try and post images.



Help much apreciated in my Samsung Laptop Keyboard .