Q: Macbook pro A1502 won't turn on

My year and a half old macbook was working fine last night.  I plugged in my iPhone, put on a podcast, dimmed the screen and went to sleep.  This morning, I tried to wake it up and it was completely off and completely non-responsive.  The green light on the charger connection was on and my iPhone had fully charged, but the macbook won't turn back on.  I tried every booting option I could find, but it's completely non-responsive.

What can I do?