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Modelo de mediados de 2012, procesador A1278 / i5 a 2,5 GHz o i7 a 2,9 GHz.

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An very unique situation with my MacBook Pro - IR cable, Logic, SSD

Hey guys,

So my MacBook Pro unibody 2012 13'' was working perfectly just one day ago. I have put in a new SSD drive for 2 months now, worked perfect. Also installed 8 GB RAM also worked nice for 3-4 days. Then suddenly yesterday everything crashed I got both I a panic (CPU 2 caller) & it keeps rebooting & refreshing in a cycle (can't insert image here, I have a photo).

Nothing was responsive, the recovery cmd -R etc was very buggy. I tried booting my SSD external with a SATA USB adapter, but still very slow and didn't boot.

I then used my brothers MacBook to connect my SSD with and the same SATA to USB adapter and it worked perfectly! I could also use it as a startup device for my system and everything worked perfectly (thank God my data was intact). So I’ve ruled out that my SSD was the troublemaker here!

After some EHBO repairing, I managed to get my system to recognize my SSD externally with the SATA to USB adapter (which I am using now). However when I put my SSD back the system, it get's recognized and boots up, but not everything is working perfectly: Spotlight doesn't search, apps crash, and the system is very slow.

So this is the strange situation I haven't encountered yet online. My SSD works with USB SATA adapter, and the internal SATA connection it also boots but has a lot errors, it's basically not working normally.

I found on the internet some possible causes:

  • Third party RAM. However when I install my old MAC ram I still get the harddrive error.
  • Bad SATA cable - pretty common - however people with bad cables couldn't get their MacBook to recognize the internal HDD/SSD or not boot it. However mine boots and even starts Sierra, but everything is working weirdly. Spotlight doesn't find anything, google drive gives me an error, very slow.
  • It could be my Logic board, but I read that if USB to SATA works your logic board is probably fine.

The only thing I can think of is that my SATA cable is partly damaged, but I cannot see how it manages to boot my SSD internally every time & recognize it.

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Sounds like the classic case of a worn HD SATA cable! This is a common problem with the MacBook Pro 13" more so than the 15" but both have the problem! What happens is the rough surface of the uppercase wears the cable and causes a short and/or the fold creases fatigue the wire connections within the ribbon cable (the bouncing about when carrying the system).

Here's the IFIXIT guide you'll need to follow: Remplaza el Cable del Disco Duro del MacBook Pro 13" Unibody Mediados 2012 and heres the needed part: MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable. I strongly recommend you place some electrical tape down on the upper case where the cable rests to help protect it from rubbing. Also don't over fold the cable.

That should fix things. You might want to also review your systems thermal sensors to be sure SMC is in good shape as SMC will run the CPU in safe mode if it is having issues. I find this app is the best for monitoring things: TG Pro and with all MacBook laptops a good battery monitoring app comes in handy too!: CoconutBattery

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

Producto

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

$34.99

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Try swapping positions between your two Ram modules, or just use one and and then the other and see if situation changes. Not very likely, but Ram modules sometimes have strange behaviours, it's a zero cost attempt and easily done.

If that doesn't produce a solution I'd go for the hard drive cable replacement..it might be going bad and shoots errors every now and then. Quite an inexpensive attempt all considered and easily done as well.

If nothing changes it will be time to consider other possibilities but it's best to go the easy way first.

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