"computer is running very slow"에 답변same problem with my other computer... what you should do is upgrade your ram (look for internet tutorials, not very hard to do) or scan your computer for viruses. i recommend a software called BitDefender (in the mac App Store) tell me of it works or not you can get 8GB ram for $50 online, comes as 2 sticks of 4gb
"MBA 2013: Keyboard and trackpad stopped responding; now won't turn on"에 답변open up the back case of ur computer with a #00 phillips screw driver. you will see the battery on the bottom. use a tri wing screw driver to unscrew two screw on the battery on the top corners. there is a little latch connected to the battery. u have to pry that off. once u remove the battery u will see the trackpad. u can use youtube to find well explained tutorials on how to replace the trackpad. as for the keyboard I don't know but i replaced a trackpad on my 13" macbook pro 2011 so i know more about that.