An Old Soul

Hi, I'm going to give a few tips, which Apple would ask you to try before sending/bringing it in for service. While some of the below may seem unesscessary, I would suggest you go through them, as they will eliminate possible causes of your issue one by one.

If the following does not work for you, I would suggest you call AppleCare. If you do have to call Apple, you'll be able to tell them this list of things you've tried and speed up the process of support.

You will want to print this off to use with your macbook while it's off.

Unplug the power adapter from the electrical outlet and from the MacBook or MacBook Pro. Wait one minute. Plug it back into the wall first, then to the MacBook or MacBook Pro. Make sure the electrical outlet is working by plugging in another device (such as a lamp). When you plug the adapter back into the computer, the power adapter LEDs should light up green or amber.

Inspect the MagSafe port on the computer for debris, such as metal stuck to the magnet in the port, which might prevent the connector from seating properly.

On the adapter side, look at the DC connector for dust or other debris and check whether pins are missing, bent or stuck down. If you find any of these to be true, see article 303240 for instructions on cleaning the adapter.

Disconnect any devices connected to the computer including printers, hubs, and third-party keyboards or mice, and test the computer again by trying to turn it on.

Press the control key, the command key, and the power button simultaneously and hold for three seconds to try to restart the computer.

Reset the PRAM.

Reset the Power Manager.

If the computer is on, turn it off.
Disconnect the AC Adapter and remove the computer's battery.
Press and hold down the power button for 5 seconds and then release the button.
Reconnect the battery and AC Adapter.
Press the Power button to restart the computer.

If you recently installed additional memory, make sure it is correctly installed and is compatible with your computer. Remove the new memory to see if the computer starts up properly without it.