I bought my Macbook Pro just last year in August. Since then I've had absolutely no trouble with it until this week. For some reason my A, S, E and L buttons started acting irritatically, I would press A, S or E and it could come up AL or EL or SL. Since then, it stopped doing that, however, now my L button doesn't work at all. No matter how hard I press it, nothing works. I've tried lifting up the key, cleaning underneath it and it didn't work. Right now i'm having to use the on screen viewer keyboard for L, which you can imagine is very annoying. I was wondering if I would be able to replace that one single key for it to work or if I'd have to replace the entire keypad. Also, if I did have to replace the entire keypad, what sort of price would it be? As if it's too expensive, I may just purchase a wireless keyboard instead. Thanks.