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Question: MacBook Pro Shutting Down Unexpectedly

I am experiencing a random and unpredictable issue with my MacBook Pro. I will be using it per normal, and for no reason (or at least no predictable action), the computer will lock for 10-15 seconds, and then shut off completely. When I reboot it, there is no error message stating that it shut down because of a problem, or crashed in any way.

If it locks and I wish to expedite the process of shutting it down by holding the power button until it turns off, then I get an error message on boot-up, saying I shut the computer down due to a problem, and would I like to reopen any programs that were operating at the time.

If I knew where to look in the logs, it might reveal whatever is causing the lock down and shut down. Regardless, I can point to no predictable action which would cause the issue.

MacBook Pro (Retina, 15-inch, Late 2013)

Processor 2.3 GHz Intel Core i7

Memory 16GB 1600 MHz DDR 3

Graphics NVIDIA GeForce GT 750M 2048MB

Intel Iris Pro 1536MB

macOS Sierra, Version 10.12.6

Thank you.

MacBook Pro, macOS Sierra (10.12.6)

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Mar 15, 2018 2:37 PM in response to BruceTheOriginal In response to BruceTheOriginal

You may be able to see something in an etrecheck report; or perhaps one

from malwarebytes for mac. (Both free from their authentic maker's sites.)

{And the Console logs can evidence a dog-pile of sheep in wool clothing.}

This may be useful:

•Use safe mode to isolate issues with your Mac - Apple Support

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Mar 15, 2018 2:37 PM

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Mar 16, 2018 2:48 PM in response to K Shaffer In response to K Shaffer

I ran an etrecheck, it didn't turn up anything alarming, except for the number of running processes. Nothing conclusive that would indicate a failure of anything, or anything that would cause the described shutdown.

Like I said in my initial message, I would gladly check the console logs if I had even the slightest idea what I'd be looking for, or what flag to search for. So much data in the logs, I don't know that I could tell specifically what log entry indicates the failure.

Mar 16, 2018 2:48 PM

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Apr 2, 2018 1:56 PM in response to BruceTheOriginal In response to BruceTheOriginal

Could anyone provide me information as to what I would need to look for in the console logs as the possible cause of this shutdown? It's still happening, and it would be nice to know what in the logs I would be looking for as an indication of the cause of the shutdown.

Thank you.

Apr 2, 2018 1:56 PM

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May 15, 2018 2:03 AM in response to BruceTheOriginal In response to BruceTheOriginal

Certain items such as 'crash reports' and hung items in Activity Monitor;

are two different items that may relate to untoward happenings.

And to see if anyone could tell from your etrecheck report anything amiss

that could be posted in your thread. It may reveal some old software or

some unnecessary anti-virus, adware or other. Etrecheck can remove it.

You could try & make second user account, and log into Mac from there

as troubleshooting measure. ~ Could be a software conflict; something

you may have added that doesn't play well with other stuff.

The ability to start in Safe mode helps, since you may note how the situation

changes in Safe mode; due to fewer third-party items that run in that status.

An attempt to use System Files or Console logs as a novice, would be most

difficult unless you are a quick study. To backup your user created content

and then consider re-installing, may be one of the troubleshooting measures.

Could be the hard drive is failing. And often enough, there may be no logs, then.

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May 15, 2018 2:03 AM

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Jun 11, 2018 1:25 AM in response to aaronisnotcool In response to aaronisnotcool

IF an official Apple repair, there usually is a Case or Incident number to cite

in reference to the re-occurring issue. ~ So when redirecting your problem to

someone there, use that number. But IF your service was done via 'authorized

Apple certified service' provider, you still should defer back to them on this.

And standard operating procedure would be to keep a local backup of your Mac

at home when you send or take your product in for service. A quality full-system

clone of the entire boot-drive content could be re-cloned into your repaired Mac.

Also a clone in suitable externally enclosed fast drive, can run your Mac directly.

Information on how to make & use clones is still valid from this archive:

Apple OS X and Time Machine Tips:


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Jun 11, 2018 1:25 AM

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Jun 19, 2018 11:55 AM in response to K Shaffer In response to K Shaffer

Hi K,

I backed up all my things on an HD, time machine style, before I went to Apple. I DO have a case number and repair number, as I brought it into an actual Apple store. And yet, my computer still restarts without warning or error message when I turn back on.

Jun 19, 2018 11:55 AM

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Question: MacBook Pro Shutting Down Unexpectedly