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13" aluminum unibody, 2.0 or 2.4 GHz Core 2 Duo processor.

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Why does the MacBook Pro doesn't boot up? (after top case replacement)

Hi!

I have installed a new topcase on my Macbook Pro (a1278) mid 2012.

Before installing it, the computer worked fine without a keyboard (I would usually remove the battery and power it on with the magsafe cable, since the keyboard wasn’t working).

Then I replaced the topcase (with Keyboard, no trackpad) and now the computer doesn’t turn on.

I tried powering it on with the magsafe and even with the Logicboard’s power pads and nothing.

I have attached a picture in case anyone has any suggestions?

Thank you!

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Answered! View the answer I have this problem too

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Chosen Solution

This has been fixed after I put the rear/bottom case back on the MBP.

I assume I had a cable poorly connected and it seems that puttng everything together solved it!

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Most Helpful Answer

Your photo shows the battery is not plugged in.

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1 Comment:

Yes I know :) I was turning the computer on with the magsafe only

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Manuel will be eternally grateful.
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