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Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Problems after replacing hard drive

Hi all,

I recently replaced the hard drive in my MacBook with this: 1 TB SSD

It worked well for the first couple days (maybe weeks? Time is blurring together these days), but now I’m running into a variety of issues. It’s been freezing fairly often - sometimes with black bars, sometimes with colorful dots in some areas of the screen, sometimes with just the screen I was on. Other times, it will crash and reboot. Sometimes it will crash and start making 3 beeps.

I’ve tried reseating/resetting all that I can and I’m at a loss. The problems don’t seem to line up with each other (from my research anyway) and I can’t figure out what do with this new hard drive. I could try switching to the old drive, but I’ve saving that as a last resort.

Have any of you encountered this situation? Any advice would be helpful. Thanks in advance!

1 TB SSD Изображение




Ответ на этот вопрос У меня та же проблема

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1. What drive Did you put in?

2, Is it backward compatible to SATA II 3.0 Ghz?

  1. Did you replace the hard drive/IR cable
  2. MacBook Pro 13" Unibody Mid 2012 Hard Drive Cable Replacement
  3. MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable
MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable Изображение


MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable


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This is the drive I used. I didn't replace the cable, but will do so next. Thank you!


That drive is comparable and should work.


@nfezz - Every time its the cable! Fixes them 99% of the time. It should honestly be considered a preventative repair on these 2012 machines.


Hi all. I replaced the hard drive cable and I’m still running into the same issues. Any other ideas before I try switching back to the old hard drive?


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nick felezzola будет вечно благодарен.
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