Troubleshooting: My computer won't turn on
After all the obvious suggestions including some that don't apply to your MBA the procedure calls for anSMC reset. Read all the steps.
Resetting the SMC on portables with a battery you should not remove on your own
- Shut down the computer.
- Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it's not already connected.
- On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time. The power adapter indicator light will cycle off / on once.
- Release all the keys and the power button at the same time.
- Press the power button to turn on the computer.
