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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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MacBook Pro (13-inch, Mid 2012) Crashing, Crashing, Crash

Hello all,

Hopefully someone can help me. First of all let me preface this post by telling you what I have upgraded in my machine. I upgraded the RAM 3 years ago to max out at 16 GB (Crucial)

I installed a SSD 2ish years ago (Crucial) I took out my Superdrive and replaced it with a HD caddy and my original 750gb HDD, 2ish years ago.

And after those upgrade boy did my Mac fly. It was like a new computer and has worked great for the better part of 2 years.

But recently it keeps crashing. I have noticed it crashing in different ways.

The first way is when I put any pressure on the left side where all the ports are. This crash often makes several lines on the screen and just freezes until I perform a hard power down. It often comes back up with no issues but if i put too much pressure on that side or sometimes the bottom... same story. At this point I try to avoid i sitting on my lap and only put it on a rigid surface.

The other way it has started to crash is when I have Chrome open. It will just crash and put up the Grey restart screen. It restarts and then is fine. There is no clear pattern and seems to happen quite randomly. Crash report attached.

From time to time It will crash and let out 3 beeps which i believe means that it cant detect the RAM. But once again very random and often just starts working again.

As of last week it has been much worse. It started to not be able to see the start up disk, which is located on my SSD, at all. I thought this was it so I took out the SSD and tried to see if I can salvage anything on it. To my surprise everything was still on it! I ran disk utility from another machine and everything came up fine. Reinstalled it and... same thing. Took it out again and was able to boot it up while connected via USB 3.0. It has crashed maybe once or twice since then but did seem better.

Things I have tried:

  • Opening and Cleaning
  • Reseting SMC and PRM
  • Disk Utility
  • Virus Scan

Things I think it could be:

  • Logic board (obviously lol)
  • RAM?

A surge with my power cable (There was a time recently when all this started that I remember by power cable being very hot and my computer in turn before all this started happening. Power was running off a large generator. Cable stopped working but my 2nd charger cable worked fine. Both are apple chargers.)

I’m in no way an expert but I am very hands on and have been a mac user for 15 years. All upgrades were installed by me but like I said... 2 years no problems.

And I know it sounds like a lot of issues but I just cant help but try anything to bring it back to life.

Like I said before it ran so well a month ago!!


Yanıtlandı! View the answer Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

Puan 0


Which drive is your boot drive the SSD which I think you stated is in the HD bay.

What is your macOS? And...

What is the make, model and size of your SSD as well as the available space it has.

What is your HDD make, model and size as well as how much available space it has.


Did you replace the hard drive/IR cable?


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You could try removing the bottom cover, get a couple of supports (books, cardboard, wood) to keep the Mac on your desk just laying on them by the short parts of the frame which are pretty strong. It may happen that with time and heat the bottom cover loses a bit of strength and slightly pushes on the RAM modules causing crashes.

Having bottom removed for some time may help understanding if this is the case.

Bu yanıt yardımcı oldu mu?

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Clean it.

Verify of the MagSafe port is clean - is there is no burnt stuff there?

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I had a computer mid 2012 MBP Core i7 with the same symptoms. Changed the MagSafe port, it was all damaged from sparks jumping when plugging in the charger. Computer runs as good as new. Connect first the charger to the computer then connect the charger to the mains to avoid damaging the port.

Bu yanıt yardımcı oldu mu?

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This sounds like you have a cloned MagSafe charger Lacking safety features, cheap MacBook chargers create big sparks. These damage systems!

I strongly recommend you get a REAL Apple unit and get it directly from Apple as the ones sold on Amazon & eBay are mostly clones! Don't Replace Your MacBook Charger With a Cheap Knockoff & FAKE Magsafe MacBook Chargers on eBay - Watch before buying a Mac Charger


Remove the ram stick from the lower ram slot and try the machine. If the MBP works ok then the ram slot is faulty. Commun issue on this model.


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