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원문 게시자: john Richardson ,

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I had a couple of  those old mac books   given to me a few yrs ago one was junk and the other had the turn on problem and it was a HD prob if you have another drive that works in another mac with M. lion or earlier on it swap it in and try a start, some times a second prob can happen like a bad drive. check on the model year of yours and OS it can run. That is what worked for me. Also pull the back and ck for signs of corrosion or loose connections.

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