Apple Diagnostics reports bad memory - 4mem/9/400000000

Bit Baby

Apple Diagnostics reports bad memory - 4mem/9/400000000

[ Edited ]

Hello guys, been happily using my Macbook Pro mid 2012 with Crucial hardware since the upgrade in 2014.

A few days ago my macbook started crashing on booting and have not been able to log in ever since -

neither normally nor in safe mode.

 

Tried resetting NVRAM which did not help and then decided to restore by a clean download install from the internet.

3 failures so far, after which my mac suggested I do diagnostics by pressing D while starting up after reboot.

 

I did - all the tests ended with a memory fault alert like these 2 I shot and uploaded:

Apple diagnostics alert on memory fail

Another memory address that apple diagnostics reported as a fault

 

Do you have any ideas of how I can farther confirm the culprit and what I can do?

Maybe the limited lifetime warranty could be of any help?

 

Here is my crucial memory & SSD models:

Crucial MX100 512GB SATA 2.5" 7mm (with 9.5mm adapter) Internal Solid State Drive CT512MX100SSD1

Crucial 16GB Kit (8GBx2) DDR3/DDR3L 1600 MHz (PC3-12800) CL11 SODIMM 204-Pin 1.35V/1.5V Memory for Mac CT2C8G3S160BM

Both sold Sold by Amazon Export Sales, Inc.

 

Need your help badly guys, thanks so much everyone!

Yosef

2 Replies
Community Manager

Re: Apple Diagnostics reports bad memory - 4mem/9/400000000

@yositsitsu I am sorry for the issues that you have experienced with your upgrade. It looks like you do have a bad memory module. You could try running each memory module separately to narrow down the issue and determine what memory module has the issue. I would advise contacting us directly, so we may set up a warranty replacement for you. Our contact information can be found in my signature. You may also set up a return by submitting your information online here. Please let us know if you have any other questions or concerns. 

YogiH, Crucial Moderator, US


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Bit Baby

Re: Apple Diagnostics reports bad memory - 4mem/9/400000000

Hi and thanks, I tried to fill in the form and realized Israel is not in the list of the countries.

So I went along and reached out to crucial on FB and got a kind response by a John,

awaiting his updated on this.

 

I did perform individul tests using the diagnostics and Memtest OSX 4.23 to make sure I was

not disturbing anyone in vain or making ewrong conclusions. Indeed, one of the sticks is 

veeery faulty. Here is the log:

 

Memtest version 4.23 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2014 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only

Log file written to /Users/yositsitsu/Downloads/Temp/memtest/memtest.log

Mac OS X 10.12.5 (Build 16F73) running in single user mode
Memory Page Size is 4096 bytes
System has 4 Intel core(s) with SSE
Total free memory is 7690 MB
Requested test memory is 7690 MB
NOTE: Reducing test size for Darwin kernel stability...
Allocated test memory is 7551MB at local address 0x0000000107d80000
Attempting memory lock... locked successfully
Splitting allocated memory into 2 comparison buffers...
Buffer A: 3775 MB starts at local address 0x0000000107d80000
Buffer B: 3775 MB starts at local address 0x00000001f3d58f80

Running 1 test sequence... (CTRL-C to quit)

Test sequence 1 of 1:

Running tests on entire 7551 MB region...
  Stuck Address       :    

FAILURE! Data mismatch at local address 0x00000001f1b7cf60
Actual Data: 0xfffbfffe0e48309f

  Linear PRN          :    

FAILURE! Data mismatch at local address  0x00000001f2bd2f78
Expected Data: 0xb82fbbf5bbd3fd99, Actual Data: 0xb82bbbf5bbd3fd99

Running comparison tests using 3775MB buffers...
  Random Value        :    

FAILURE! Data mismatch at local BUFA address 0x00000001f23c0f60, BUFB address 0x00000002de399ee0
BUFA Data: 0xdfe21712cf7e2e0d, BUFB Data: 0xdfe61712cf7e2e0d

  Compare XOR         :    

FAILURE! Data mismatch at local BUFA address 0x00000001f23c0f60, BUFB address 0x00000002de399ee0
BUFA Data: 0xe09576c8b003f375, BUFB Data: 0xe09176c8b003f375

  Compare SUB         :    

FAILURE! Data mismatch at local BUFA address 0x00000001f23c0f60, BUFB address 0x00000002de399ee0
BUFA Data: 0x38976336c65c87fc, BUFB Data: 0x38936336c65c87fc

  Compare MUL         :    

FAILURE! Data mismatch at local BUFA address 0x000000010ecdefc0, BUFB address 0x00000001facb7f40
BUFA Data: 0x15ef0031ad03f199, BUFB Data: 0x156f0031ad03f199

  Compare DIV         :    

FAILURE! Data mismatch at local BUFA address 0x00000001f23c0f60, BUFB address 0x00000002de399ee0
BUFA Data: 0x0000000000000000, BUFB Data: 0x0000000000000001

  Compare OR          :    

FAILURE! Data mismatch at local BUFA address 0x000000010f231fc0, BUFB address 0x00000001fb20af40
BUFA Data: 0x5efd940afef943d2, BUFB Data: 0x5e7d940afef943d2

  Compare AND         :    

FAILURE! Data mismatch at local BUFA address 0x000000010f231fc0, BUFB address 0x00000001fb20af40
BUFA Data: 0x58f48002fe5101c0, BUFB Data: 0x58748002fe5101c0

  Sequential Increment:    

FAILURE! Data mismatch at local BUFA address 0x0000000110a35fc0, BUFB address 0x00000001fca0ef40
BUFA Data: 0xfc9ef62b7e4b05ad, BUFB Data: 0xfc1ef62b7e4b05ad

  Solid Bits          :    

FAILURE! Data mismatch at local BUFA address 0x0000000109214ff8, BUFB address 0x00000001f51edf78
BUFA Data: 0xffffffffffffffff, BUFB Data: 0xfffbffffffffffff

  Block Sequential    :    

FAILURE! Data mismatch at local BUFA address 0x0000000107e33fe0, BUFB address 0x00000001f3e0cf60
BUFA Data: 0x0404040404040404, BUFB Data: 0x0400040404040404

  Checkerboard        :    

FAILURE! Data mismatch at local BUFA address 0x00000001f222cf60, BUFB address 0x00000002de205ee0
BUFA Data: 0x5551555555555555, BUFB Data: 0x5555555555555555

  Bit Spread          :    

FAILURE! Data mismatch at local BUFA address 0x00000001084a0fe0, BUFB address 0x00000001f4479f60
BUFA Data: 0xffffffffa0000000, BUFB Data: 0xfffbffffa0000000

  Bit Flip            :    

FAILURE! Data mismatch at local BUFA address 0x0000000108269ff8, BUFB address 0x00000001f4242f78
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xfffbfffffffffffe

  Walking Ones        :    

FAILURE! Data mismatch at local BUFA address 0x000000010869ffe0, BUFB address 0x00000001f4678f60
BUFA Data: 0xfffffffffffffffe, BUFB Data: 0xfffbfffffffffffe

  Walking Zeroes      :    

FAILURE! Data mismatch at local BUFA address 0x0000000107e7bfe0, BUFB address 0x00000001f3e54f60
BUFA Data: 0xffffffff80000000, BUFB Data: 0xfffbffff80000000


*** Address Test Failed ***  One or more DIMM address lines are non-functional.
Execution time: 214 seconds.