My macbook air won't turn on and the led light on the cord doesn't light up

I can't get my macbook air to turn on and the cord light won't go on, either. It was not dead last night when I shut it down . . . any ideas?

Hello srsymington,
Thanks for using Apple Support Communities.
To troubleshoot this issue where your MacBook Air will not power on, I'd like you to please reset the SMC as directed below.
Resetting the SMC on portables with a battery you should not remove on your own
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Intel-based Macs: Resetting the System Management Controller (SMC)
Cheers,
Alex H.

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