I got a brand new inspiron 640 m laptop a week and a half ago. Today, for some reason, the 'K' key on the keyboard doesn't seem to be as "smooth as all the other keys".

 

For example, when I press down on it, it doesn't go down as easy as the other ones. If I press down on the left side of the 'K' key, it feels normal....as I press down on them middle it feels tight. Finally, when I press down on the right side, it feels a bit more tighter.

 

What can I do?

 

please help me