1

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?

2

I took it to the lab, there they unplugged the battery and plugged it back. That solved the problem.

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