I went to turn my 2011 MacBook air on this morning and I was unable to type my password because some of the keys would not respond. I did not spill any liquids on it. I reset it many times, even drained the battery all the way down, but still some keys do not respond, and they are the keys that I need To enter my password, and I cannot reset the P ram because the P Key is one of the keys that does not work. So the keyboard stopped working even before the operating system loads, and does not work properly even in the Internet recovery screen. I am travelin I am traveling in a remote part of Mexico and I have little access to things like the Apple Store. If I get desperate I will get to a store and buy a USB keyboard. I searched extensively online, and it appears that many people had different sets of keys stop working, and there were different ways to hit command or option or caps lock to get it to work but none of the techniques that I found made any difference. Any help is appreciated!!