MacBook Pro randomly shuts down.

I am the proud owner of a MacBook Pro 2014 15", but i recently started getting an issue where it shuts down randomly.

This problem started about 1 and a half week ago on macOS 11.7.4

When I "ask" the terminal is gives me "recent shutdown cause error code -128".

This happens when I'm using battery as well as when using AC power.


I've tried a number of things:

  1. Resetting the SMC as wel as the PRAM. (Ctrl + Option + Shift + Power / Option + Command + P + R)
  2. Reinstalling macOS. (2 times 11.6.8 and 2 times 11.7.4)
  3. Using the Mac in "Safe Boot". (Shift on boot)
  4. Replaced the battery. (was over 1425 cycles anyway)
  5. Hardware test, nothing showed up. (Command + D on boot)
  6. I tried to delete appleThunderboltNHI.kext. (was back every time/not sure it worked)
  7. Installed Ubuntu 20.04 LTS. (no problems)


Meanwhile i installed macOS 11.6.8 on 2 MacBooks using a usb.

The problem is only on one device so it also isn't the installer-usb.

I now have installed Mavericks (original to this device) to see if that works. (to be continued...)


It also doesn't happen when it's on screensaver. (I left it for 2 nights and it stayed on)


Apple support tells me it's a hardware issue but I found it weird that Ubuntu works then.


I'm hoping one of you guys may be able to help me to at least tell me what the issue is.

MacBook Pro 15″

Posted on Mar 13, 2023 2:51 AM

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Posted on Dec 20, 2023 4:14 AM

Hello Everyone,


I see that there are still people reporting the same issue in this thread.


For those who still have the problem to this day, i’ve posted the solution in my case on March 22th this year.

My macbook still haven’t had the problem since i swapped the SSD. (for 9 months now)

This means that it definetly is a NAND issue.


I don’t know for sure that it saves all macbooks with this problem or if it specificly has to be an Apple SSD, but if you have the shutdown problem with code -128 i’d definetly try replacing the SSD first because the solderd RAM isn’t going anywhere and the motherboards are more expensive then the same machine second hand.


If anyone still has questions i’d love to hear it.


Greetings , Quinten

55 replies

Mar 13, 2023 5:17 AM in response to QuintenDH

If your MacBook Pro is randomly shutting down, there are a few steps that you can take to try and troubleshoot the issue.

1. Check if the temperature of your laptop is too high by using an app like iStat Menus or Temperature Gauge. If it’s too high, consider getting a laptop cooling pad or use your laptop on a hard surface instead of on your lap.

2. Ensure that all of your apps are up to date and check for any updates from the App Store. Sometimes installed software can cause the system to shut down unexpectedly.

3. Consult with Apple Support for further advice about how to resolve this issue.


If that doesn't resolve the issue then there is a cheap way to buy a replacement macbook pro.


Ive found a good selection of refurbished macbooks on ourdeal.co.uk


the decision is yours completely.


Mar 21, 2023 2:08 PM in response to QuintenDH

Hello,


I also have the same year/model MacBook Pro 2014 15" and starting about a week ago my laptop began to shut off out of the blue! HIGHLY FRUSTRATING. It happens with full battery, while plugged in, and seemed to begin after some form of automatic nightly update a week ago.


I've kept this macbook pro in excellent condition and do not want to purchase a new laptop.


The fact that someone else with the same make/model is experiencing the same issue beginning about the same time tells me that it's a software issue (or Apple is trying to force us to purchase a newer model).


What can we do to resolve this? Please help!


Version: 11.7.4

MacBook Pro (Retina, 15-inch, Mid 2014)

Processor 2.5 GHz Quad-Core Intel Core i7

Memory 16 GB 1600 MHz DDR3

Startup Disk Machintosh HD

Graphics Intel Iris Pro 1536 MB

Mar 22, 2023 12:50 AM in response to jalapengo

Hello Everyone,

I promised to keep you guys updated so here is the update:


Because my 2014 Macbook had issues and i still had work left to do i bought another Macbook this time from 2015.

One moment i was working and i thougd, SSD's have NAND modules to, so i went online and found one thread on ifixit forum with the same issue but they blamed the SSD.

I've tried pretty much everything till this point and now had another Macbook so i figgured "heck, how many times do you live".

I swapped the SSD's between the two Macbook's and guess what, no issue on any of the two for allmost a week.

So i still can't tell if it is the SSD or motherboard cause nothing broke down ever since.

I allso thougd "maby the installation must happen on the 2015 modal" but no, even when installing macOS on the 2015 modal and then putting the SSD back in the 2014 modal, it gave up on me again within 30 minutes.

So now i have 2 working Macbooks with "incompatible" SSD's cause the 2015 SSD didn't exist when the 2014 Macbook was released.

The only downside is that none is at full speed now, one has a limmited bus and the other has a limmited SSD, but since macOS is so fast anyways i cant tell the difference in speed so i dont give a [user friendly content].


If you're experiensing the same issue, try a different SSD before you start expensive repairs.

Most of the time you can return an SSD if it didn't solve the issue anyways, if not Ebay is your best friend.


I hope you guys are all well informed now.

If any of you guys have questions, feel free to contact again.

Apr 28, 2023 4:58 AM in response to jalapengo

This is happening to me as well and I’m furious! I get it out laptops are old but mine is in great condition as well and was running perfectly till I downloaded big sur 11.7.4. This is no coincidence at all. I also don’t have the money to shell out for a new MacBook Pro right now. I would like to resolve this issue as well. Nothing is working.

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MacBook Pro randomly shuts down.

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