I was working on MacBook Pro (2012), the battery was full and the MagSafe adapter light was green.
When I connected an iPhone USB cable, the MacBook Pro immediately went black (it shut off without shutdown process), and the MagSafe light won't light up.
After I did the SMC reset, the computer won't turn on, the MagSafe light would be green and blinking for a minute, and then disappear again.
What can be done?
Best Answer
I took it to the lab, there they unplugged the battery and plugged it back. That solved the problem.