Chosen Solution

So İ accidentally broke off the power button on my Air and when İ tried putting it in İ may have lost a metal piece and now it wont work İ also have another Air with no OS and a cracked screen Should İ salvage parts and then put the missing keys from my old housing and then use it that way or take the screen off my Air with dead power button with SSD That mac has important stuff in it İt has very old pictures that İ want Or should İ ignore because my old 6 Plus has the pictures too

Keyboards keys are delicate! I would focus on swapping out the damaged parts to the good upper case system (broken screen) or just replace the MacBook Air 11" (Mid 2013-Early 2015) Upper Case part. Basically, transferring the parts to the good upper case. Here’s the guide MacBook Air 11" Mid 2013 Upper Case Replacement Given the age of your system I’m sure your battery is not very healthy if its still the original! Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question Here’s the needed battery if you know its time MacBook Air 11" (Mid 2011-Early 2015) Battery and the guide MacBook Air 11" Mid 2013 Battery Replacement