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My MacBook Pro (middle 2009) dies once or twice per day, with the screen picture stopped, and all the keys don't work, including the Caps Lock key. So I can only force-shutdown it using the power button.

  • 2013.4.25 Plugged in 8G memory (2 × 4G)
  • 2013.4.28 Repaired the disk permissions
  • 2013.4.29 Fell from chair (1 foot high), and then got stuck three times in the afternoon.
  • 2013.4.30 I had a test. Opened my MacBook, keeping no apps running. And it died ten minutes later.
  • 2013.5.2 13:58:12 Got stuck when I was using it, and the screen flashed red.
  • 2013.5.3 1.Verified the disk using "Disk Utility" and everything is OK. But the "Apple Call services" man told to me,"it's just seems OK, not certainly OK". -__-|||... 2.The task manager shows the Dropbox is keeping using the CPU & Disk. So I quited Dropbox, which leads a miracle (^o^)/~, the "dies" phenomenon didn't come out all day along.

  • In the end, I came to one of "Apple Authorized Service Providers". And paid for a socalled "professional" test. Finally,they told me the the hard disk is ok, but there may be some trouble in the logic board which will cause wrong when the temperature rise . Yes, the answer is maybe..... Their solution is to replace a new logic board, which will cost lot that I would rather buy a new one .

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Well, since it fell from the chair I'd just say it will be caused by that – some kind of mechanical failure with either the hard disk or the logic board. I'd try having it repaired. Are you sure the chair was just 1 inch high? Did you mean 1 foot? –  slhck May 4 '13 at 10:54
    
@slhck Thx! That was very thoughtful of you. It's 1 foot as you mentioned. –  Stephenmjm May 4 '13 at 14:29
    
So, what is the question, now that Dropbox is disabled? And what if you put the old memory back in? (And, small chance, but: my sister had freeze problems caused by Spotify on a OS X 10.6 machine. Spotify does not support 10.6 anymore, but still an automatic update was performed, making her Mac very unstable. So: automatic software updates can be the start of troubles.) –  Arjan May 4 '13 at 16:18

1 Answer 1

There may be some trouble in the logic board,go for a new one.

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You have already said that in the question. –  gronostaj Aug 21 '13 at 6:51
    
@gronostaj it's OK to answer your own question. If replacing the motherboard solved the problem, then that's the answer to the question, and he can mark his own answer as accepted. That's how it's supposed to work. –  nhinkle Aug 21 '13 at 8:00
    
@nhinkle This answer doesn't say that it actually solved the problem, it's just a statement that replacing logic board may help - that was already said in the question. –  gronostaj Aug 21 '13 at 8:36

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