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?