Μac's are an unsolved cosmic mystery. I follow this topic for years after I left my AiR in a box NOT FUNCTIONAL as a laptop cause the qwerty bla bla had left me for ever. Even the best fixers in my town couldn't repair it... (I had try evrything except spells magics e.t.c.)... a few months ago I was in need of an extra monitor for a simple job with no need of keyboard... so I recover it from the box, charge it, open it...still absolutely functional tho I hadn't use it for more than 5 years... and guess what! Keyword works perfectly good...lol