MacBook Pro Shutting Down Unexpectedly

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

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.

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:

http://oldtoad.net/pondini.org/OSX/Home.html

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.

Same thing happened to me! I sent mine to Apple they wiped everything, replaced the fans, and sent it back and it still happens. Did you find a fix?