Yesterday I was using my Macbook and everything was just fine.... I know for a fact no one has used my macbook since I last used it yesterday. I just got on it for the first time today and now the s key requires a great amount of force to get it to go all the way down and register as a key press. Any ideas of what might've happened or how I could possibly get in there and fix it? Or am I stuck buying a new top case?