I noticed a while ago actually, that my left SHIFT key is completely unresponsive. I never really thought much of the problem and thought it could probably fixed from system perfrences or something. Recently, it's been bugging me because I can't get it to work. I haven't tried taking the key out and putting it back in. I have an early 15 inch 2011 model. I'm not under any warranty either. Will this be an expensive problem, or is there an easy fix?
MacBook
Pro, OS X Mountain Lion (10.8.2)