Why wouldn't he just get a new keyboard though? If the keys keep falling out it's barely a sign for that keyboard's good longevity.
He said his friend is using a notebook. Not as easy to get the keyboard replaced on those. =P
Tell him to contact the manufacturer of the notebook and see if they can help out. I don't know how exactly you lose keys, you shouldn't really be taking them off. >.>;
"... and so I close, realizing that perhaps the ending has not yet been written."