I connected a external monitor and I can see everything on the external screen. I did a PRAM and SMC reset and the problem still persists. I can ear the mac chime, but the screen turns off after a second and it never shows any image. I opened the bottom case, disconnected the battery, and connected the power cable and the mac started. I tried to force a restart but the power button did nothing. I have a Macbook Pro Retina (a1398), and I need some help.Ī few days ago I closed the Macbook lid, it went to sleep, but the I opened it back, it never came back on.
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