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Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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MacBook will not power up

My laptop (MacBook pro 15 inch late 2011 edition) won’t power up anymore; resetting SMC, trying other adapter, etc doesn’t work. The light on the adaptor is green, not orange, so it’s not charging. When I press the battery indicator button on the side of the laptop when the adaptor is not connected, the battery seems completely drained.

I think the battery is defective - but I find it strange that the computer won’t turn on with the adaptor connected. Before I order a new battery and change it I wonder if a faulty battery is really the cause. Any thoughts? Suggestions highly appreciated!

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Disconnect the battery from the logic board and plug in magsafe..the board should start by itself, no need to press power button. If it starts then it's probably a battery issue, if not something is faulty on the logic board side.

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Thank you. I opened the MacBook and disconnected the cable between battery and motherboard (can't get the battery out because I lack a Y1 screwdriver, but I think disconnecting the cable should be enough) and unfortunately the laptop didn't start when plugging in the adaptor. So, I guess not a battery issue. Thanks for your advice.

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Unfortunately yes, that proves it's not a battery issue. Any further testing would need more advanced technical skills since it's likely a component repair is needed or a logic board replacement.

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Marc Engelen will be eternally grateful.
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