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Released June 2009 / 2.66, 2.8, or 3.06 GHz Core 2 Duo Processor

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Replaced batterie with a brand new.

MacBook Pro 13'' Mid 2009 Model 1286

I placed the battery of my Macbook with a new purchased from iFixit. Macbook worked normally for an hour or two, then froze. After I restart the Mac with the power boutton, the mac does not recognize the hard disk any more. (No apple logo but a question mark). After replacing the battery with the old one, the Mac starts up normally. Thus, there is no cable or mother board issue. I tried with another new battery and I have the same problem. Is there something to do to solve this ? Battery model from my Macbook is A1321.

The brand new from iFixit is also A1321.

Answer this question I have this problem too

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The A1286 is a 15" machine. This does not sound like a battery issues to me. The hard drive cables often fail on this machine and can corrupt and even destroy the hard drive. Make sure you have an external hard drive backup of your data before going any further.

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Yes, you are right it is a 15'' machine. I've make a mistake, sorry.

But, don't think it is a cable issue. The macbook work fine with the old battery placed back.

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Let's take an in-depth look at both batteries. Download and run Coconut battery on both batteries and let us know your results. http://www.coconut-flavour.com

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Can't start with any of the new batteries, so I can't see what Coconut gives as information's. With the old battery coconut gives for battery health - Current max: 5460mAh, Original max: 6500mAh, 73%, Cycles: 245. I will make a external usb bootable hd and see what happens.

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So the two new batteries give the same result, have you let your old battery run for an hour or two to see if it still freezes up?

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sergeschmit will be eternally grateful.
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