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2.2 GHz (Turbo Boost up to 3.4 GHz) or 2.5 GHz (Turbo Boost up to 3.7 GHz) quad-core Intel Core i7 processor with 6MB shared L3 cache.

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After battery replacement, keyboard does not work

I changed macbook battery today, but keyboard does not work anymore. In settings ATA seems this computer does not include ATA etc. What should I do to fix my keyboard?

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The keyboard connector is very close to the battery. Open the flap carefully on the keyboard connector and slide out the flex cable - then slide it back in and try to push it deep in the connector and close the flap again. Power on your macbook and test it.

If that didn't work, remove the flex cable and inspect it for tears or damaged pins. Also inspect the connector on the motherboard for damage.

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