Chosen Solution
Just recently it completely turned off in the middle of a work session ( battery at least half full, and possibly also plugged in with the MagSafe). It now no longer turns on at all. No signs of any functions. Another working charger does not do anything, either. No charging light, no sounds that the fan is working, no keyboard lights working. I reset the controller and tried all the other shortcut key options to turn it on, but no luck. Possibly a leading cause to this, but for a while now, the MagSafe orange light no longer worked. The laptop still charged just fine, and when it is fully charged, the green light would come on. When initially plugged in, a momentary green light would shows up, then disappears until full. I am wondering if this has something to do with the laptop completely dying? Ideas?
Lets start off looking at your MagSafe connectors review this Apple TN: Apple Portables: Troubleshooting MagSafe adapters if the systems connector is bad you may need to start off replacing it MacBook Air 13" Mid 2012 I/O Board Replacement
