Macbook Air Won't Turn On
I was using my macbook earlier with no problem. Until after a toggle in between programs froze the screen. The mouse pointer stopped working. After I did a force reset by holding the power button for 5 seconds and turned it back on... it's now not working and stuck on a black screen.
What could have happened and what do I do to identify the problem or make it work again?
MacBook Air 13", 10.12