MacBook Air won’t turn on

If your Mac doesn't turn on

If your Mac doesn't seem to turn on after you press the power button, follow these steps.

Your Mac might be turned on but appear to be turned off, even though it's connected to AC power and a working display. Follow these steps.

1. Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is turned on, this forces it to turn off.
2. If you see no change on your Mac, press and release the power button normally.
3. If your Mac now turns on but doesn't finish starting up, follow the steps for when your Mac doesn't start up all the way.
4. If your Mac still doesn't turn on, please contact Apple Support.

Axel F.

If after doing all things @ Axel Foley suggested still not success - Apple Repair