Question on Apple Hardware Test Results

I just ran an extensive test on my MacBook Pro (Late 2012). I got back the reference code 4MEM/66/40000000:0x7f562590.
I can't find what that means. I am assuming it is a memory issue. Safari has been locking up on me quite a bit, as well as Finder. Everything seems to be a task with my computer as of late.
If anybody could give me a direction, I would appreciate it.

The MEM part of the code usually refers to memory modules so i would say that one or both of your RAM modules are defective.If your machine is still covered by a warranty, contact Apple. If not, book an appointment at your nearest Genius Bar for a definite diagnosis. If it is the RAM and yours is a 2012, I believe that is the last model where the RAM is user replaceable, so you could easily do it yourself. Make sure you get it from a recommended vendor such as OWC (macsales.com) or Crucial.

Similar Messages

Apple hardware test results means?

My older 20" imac intel crashes 1-4 times a day, freezes up, have to press power button to shut it down; ran apple hardware test twice and got these two alerts: apple hardware test 4MHD/2/40000004: 0x7c651f10 and 4MHD/2/40000004: 0x7ba72510; before running AHT, had already run diskwarrior, disk utility, TTPro, and they all found nothing amiss.
any ideas? much thanks.

I don't know what the errors mean but the symptoms could point to the memory. You've tried everything else how about removing one memory module at a time and rebooting to see if you can eliminate that possibility.
Good luck, Rick.

Apple hardware test result

My macbook pro keeps crashing. - black screen with an instuction to restart. I run the Apple hard ware test and it gave me this error code:
4MEM/3/40000000:1c0e 0990
Does anyone know what this means?
Does my new mac have to go to the hospital?

Hello!
I had the same problem and solved it. Please refer to the link below.
http://discussions.apple.com/thread.jspa?threadID=919711&tstart=30
This is a bad memory DIMM problem. You need to trace which one of the DIMMs is defect.
The problem can appear spontaneous (as it was on my MBP). Once you got this error code, try to make memory test.
There is very helpful program for memory test under Mac OS X. You can find it here http://www.memtestosx.org/
MacBook Pro 17" Duo Core Mac OS X (10.4.9) 2GB RAM

Apple Hardware Test (MacPro) result codes

Hello, My MacPro has been doing the wierdest things like freezing up, although the mouse will move. Freezes while monitors are sleeping. Freezes when I move mouse towards dock. Freezes for no apparent reason ... all updates have been performed.
Bright idea tonight, I decided to run the Apple Hardware Test provided on my install disks ... I got an error code "4SNS/1/40000001:VMBS". No idea what it is or means and have searched high and low on the internet for result codes.
Does anyone know what this means?
I have been supicious of my ATi Radeon X1900 XT for some time as there have been artifacts and odd colour shifts and graphic anomalies.
Thanks for your help, all is appreciated.

apple hasn't released a key to the public as to what the hardware codes mean. you really need to take it in for diagnosis.

Apple Hardware Test Question on iMac

I did an advanced Apple Hardware test on my 09 iMac today to test it and to see what was making the buzzing sound. The advanced test revved up each fan when it tested the logic board and I can say it is the lower left fan making the buzzing, however once it reaches 2000+ RPM the buzzing goes away.
The question i want to ask is after the test the optical drive fan stayed revved up at over 2000 RPM for a few minutes after the computer restarted, unlike the other two fans that went back to normal this fan took atleast 3 mins to go back down to normal rpms. Is this normal?
Thanks
Also does the HDD run when in a hardware test? as now and then during the test I heard a weird static sound coming from the HDD.

I looked at iStat after restarting from the test and it showed that only the optical drive fan was running at high speed after the test, with the slight buzzing fan still buzzing at low speed. I could hear that the optical drive fan was slowly revving down getting slower and slower, iStat showed it was as well and now its back to normal rpm and not revved anymore. I just thought all fans would return to normal after the test unless the optical drive got hot during the test.
The buzz is not too bad and is only noticeable in a quite room but I'm more concerned about the random grind/static sound the HDD is making ever so often. The sound is very quiet but can still be heard but i don't know what it is, well I know its not the sound of a HDD breaking as I know what that hears like.

Apple Hardware Test Question

I have a macbook that is currently not starting up from it's internal HD. The drive will not even show up if I hold down option at start-up and attempt to select it as the start-up disk.
I have the install disks that came with a white macbook, but the computer that I'm working on is a blackbook.
I have attempted to start-up into AHT by holding down 'd' as instructed, the system configuration test runs, I select the language, but then it says that this version is incompatable with the machine.
The AHT verison is 3A118
Is this the right version? Or is there a different version for the blackbook?
I'm going to try to run TechTool Pro a little bit later.
Secondly, I am even unable to re-install the OS from the disk that I have. Could this potentiall be a total failure of the HD that I may not even be able to recover the data from?
Any and all help will be greatly appreciated!
Thanks in advance!

There have been three MacBook versions. You haven't told us which version MacBook you have, so we can't tell you if that's the right disk or not. The Apple Hardware Test is, as its name suggests, hardware-specific to the model that it shipped with. The correct version isn't dependent on the color of the MacBook, but rather the model/revision. Which processor do you have and what's the speed? Core Duo? Core 2 Duo? 1.8GHz? 2.0GHz? 2.1GHz?
If the Mac OS X installer on that disk tells you that it can't be installed on that model Mac, then you have the wrong disk. You will need the correct disk for both the Mac OS X installer and the Apple Hardware Test. Or does the Mac OS X install fail at a different place?
-Doug

Yet another pointless question about the practically non-existent iMac G5 Apple Hardware Test (AHT) disk.

I have a 17" iMac G5 (iSight model) also known as model A1144, PowerMac12,1 or MA063LL/A.
Where do I download the Apple Hardware Test (AHT) disk for this machine? Apparently nowhere. However, it would really help me on my quest if I knew what I was looking for.
Does anyone know what AHT version is compatable with my machine? 2.2.1? 2.3.1?
How about the part number on the disk? I have some Intel disks that say 2Z691-5734-A that (obviously) won't work.
Is the AHT on Disk 1 or Disk 2? I'm starting to think there never was an AHT for this model.
Where do I get those ASD disks the so called "geniuses" have?

Disk 1: 2Z691-53179-A
Disk 2: 2Z691-5493-A
Compatible with eMac (2005), iBook G4 (Late 2004), iBook G4 (Mid 2005), iMac G5 17-inch (ALS), iMac G5 20-inch (ALS), iMac G5 (17-inch iSight), iMac G5 (20-inch iSight), iMac (Early 2006 17-inch), iMac (Early 2006 20-inch), Mac mini, Mac mini (Late 2005), Mac mini (Early 2006), MacBook Pro, Power Mac G5 (Early 2005), Power Mac G5 (Late 2005), PowerBook G4 (15-inch Double-Layer SD), PowerBook G4 (17-inch Double-Layer SD)
http://www.welovemacs.com/2z69153179a.html
AHT I think was on a seperate CD.
Thanks Kappy, if v2.2.1 then search for...
018-1680-A.dmg

Will Apple Hardware Test definitely detect RAM errors?

Hello,
Been having various problems with Leopard/MacBook. Someone suggested running Apple Hardware Test, which I did, in extended + looping mode all night (it cycled 6 times). The test turned up nothing. Can I take this to mean that whatever problems I am having are definitely software related? I am not familiar with the AHT, don't know exactly what it does, nor how I can interpret a "clean" result...
Many thanks for any advice/tips.

No indeed (just "Colin" is fine...)
My problems have mostly been documented by other people, and I have just been monitoring the discussions on these issues.
Specifically (at the risk of getting off-topic):
1) inconsistent shared server behaviour: I have 3 other macs at home - an iBook and a G4 MiniMac running Tiger, and a G4 tower, also running Leopard - and most of the time, the tower doesn't show up at all, but I can connect to it via CMD-K, the MiniMac shows up in the sidebar, but won't let me connect, and the iBook, when it is running, behaves normally. Oh, screen sharing doesn't work either: it tries connect but hangs (except for the iBook, which works). I could connect to all four quite normally after upgrading to 10.5.0, using the sidebar icons. Everything worked fine until sometime after the 10.5.1 update, when suddenly everything went pear-shaped. Nothing has changed in the configs of the other machines, and the iBook and the MiniMac are identical in terms of software config (but behave differently as regards this problem?!?)
Closing Airport and reopening it makes the icons reappear in the sidebar (all of them, G4 tower included), as does relaunching the Finder, but doesn't change the behaviour: I still can't connect. When I try to use the sidebar icon for the tower, it disappears (the icon...)
As far as I can tell, trying to operate shares from the G4 tower works as Apple intended (although I admit I have not exhaustively tested every option, as I don't have unlimited time...)
2) Lost my printer connections, both at work and at home. I managed to reestablish them at work, but I tried so many things that finally I'm not sure what actually worked. No dice at home (shared printer on the MiniMac... same problem as (1) I guess.)
3) the dreaded Keynote spontaneous reboot problem (I placed a reply about that last night here:
http://discussions.apple.com/message.jspa?messageID=6630702#6630702
4) diverse weird things, like
4a)iCal which had doubled all my events the last time I opened it. I had to manually delete one copy of every event I had entered, whereas I made these entries several weeks ago, and had consulted them many times... I'm thinking this is perhaps a result of the brutal reboots caused by (3)? Having deleted all the doubles, iCal seems to be behaving normally again.
4b)screen resolutions on my slave screen suddenly failing to select properly. I move my MacBook between two different external monitors, one at work, one at home, and their resolutions are different. Initially the MacBook had no trouble detecting and correctly setting the resolutions for the two screens, then suddenly my home screen went weird on me, and required a manual reset. Again, this was a once-off, and does not seem to be repeating (yet).
4c)sluggish performance with some apps that are normally quite snappy, like Firefox, which seems to hang a lot loading pages, Keynote (saving is often painfully slow), and indeed, trying to copy a 250Mb file from the tower to the MacBook via Airport (having connected using CMD-K) said it was going to take 33 hrs, which I thought was a bit rich...
4d) hot-swapping a usb pin for a keyboard+optical mouse receiver from the tower to the MacBook sometimes causes something inexplicable to happen to the MacBook's keyboard: both the Caps and the NumLock LEDs come on, and the keyboard has jumped into some config other than what it is normally in (French). I have not been able to determine what the keyboard actually thinks it is when this occurs (3 times now). The command keys (ctrl, alt, cmd) do not appear to work at all. Rebooting corrects it.
All up, pretty irritating, and a huge time waster, as you can well imagine. I stuck a bit of a rant on the discussions the other day in a moment of intense frustration, which got zapped by the moderators (probably not unreasonably!), but not before someone replied suggesting that it might be bad RAM, hence my questions here.

Apple hardware test - how long?

I have tried to run the Apple hardware test with my iBook G4. The reason for this test is that my ethernet port has stopped working.
I have tried all online tips I can find with no result. The only things I haven´t tried is the hardware test and a complete reinstall of the OS X
(in case the ethernet problem is software related)
The hardware test works great until the test of the logic board. 33 seconds after pushing the start button, the fan speeds up for a second or two
and then slows down and stops. The progress bar stops and there are no sounds from the ibook.
It looks like the test have frozen, although it could be working veeeery slowly.
After 37 hours I was feed up so I pushed the stop button. No reaction.
Other two - button combinations doesn´t work. The only thing that stops the test is holding down the power button.
The iBook boots nicely from the hard disc and from the installation CD.
So my question is:
How long should the hardware test normally take?
Any other ideas?
Timmy

The Apple Hardware Test does not actually check the Ethernet port directly. It will, however, check the logic board that the Ethernet port is build-in to. Usually the longest part of the test is RAM. If you're not even getting as far as the RAM tests, then there could be something wrong with your hardware that the AHT can't overcome. But, in any case, it should never take more than an about an hour to run.
Perhaps it's time to consider getting an AirPort card for the iBook and using wireless Internet at home?
-Doug

HT202731 What should I do next when using the apple hardware test and it will not complete. It always gets frozen when 56 seconds of testing has passed?

MY MacBook pro will not boot up correctly. When switched on a grey screen appears and a flashing question mark box.after researching I have been able to try to complete an apple hardware test by holding the D key when switched on. Unfotunately this text will not complete. Every time I try and perform this text it sticks after 56 seconds of testing and does nothing rlse. Resulting in my having to force shut down.
I know do not know what else I can do to try and solve my problem.
Any help would be grately appreciated.
Thanks.

I would install a new HDD, format it and install the OSX. Then I would connect the old HDD via USB and see if I can access the files that are on it.
If no success and if the data is important, look for recovery software on the Internet. Most have a trial that will tell you the possibilities for retrieving data but then you will have to pay for the software.
The last option is employing a professional data retrieval service. That will be expensive with no guarantee of results.
Ciao.

I have a latest 2.7 EFI update but i still don't have the ATH(Apple Hardware Test) software! why is that so? do we have it on mountain lion?

So as u know the question
ill tell u the steps to try them out(no harm will be caused to u or ur com)
During restart-up press the D button before the gray screen appears and hold it for about a minute until u see a 4 or 6 bit image of old mac icon appear and then it loads u go select any language and click hardware test full and then tell me if it DOES HAPPEN ON OS X 10.8(mountain lion).
Thnx apple and u guys!

To use Internet Apple Hardware Test, start up your Mac and hold down both the option and D keys on your keyboard.

Can't boot off Apple Hardware Test disk

Can anyone suggest why my laptop won't boot off of its Apple Hardware Test disk anymore? I have not tried it in years, but want to try now. I have the original, and a copy I made years ago, and neither will boot. I can select them at startup disks in that preference pane in OSX, but then it fails to find it, and boots into OSX. I can boot into OS9 on the hard drive. I was able to partially boot off of a different AHT disk from my 12" Albook G4, but it gave the message that I can't use that disk since it is not meant for the Tibook. One idea is that TechTool tells me that "macintosh startup file was absent", and the Help file states:
"The Startup file is intended for use by systems that do not have built-in ROM support for booting from HFS Extended volumes. The first eight extents of the Startup File are stored in the Volume Header. This makes them easy to locate and read into memory. This file contains information used by the computer’s ROM to determine what program will boot the computer. In almost every case, this will be configured to point to the preferred System."
But it does not tell me how to restore this Startup file.
-how can i get my startup file back?
-my computer boots fine off the hard drive, so is this file used only to boot off a CD?
-any ideas why i can't boot off my AHT CD?

Hi, t. (That alias of yours sure is a mouthful.) I think in your shoes I would pose the question to the tech support people at Micromat (TechTool's developer). It's their error message, after all, and they should be able to explain it to you in as much detail as you need. Perhaps they'll shed some light on the original problem in the process.

Cannot start-up to the Apple Hardware Test — MacBook Pro & Lion

Whenever I try holding the D key before and throughout all of the start-up process, it simply makes the grey screen appear for longer, and slow the whole process... but never beings the Apple Hardware Test.
I'm following Apple's official instructions:
To start up your computer in Apple Hardware Test:
Press the power button to turn on your computer.
Press and hold the D key before the gray startup screen appears. An Internet-enabled connection via Ethernet or Wi-Fi is required to use this feature.
Note: Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT.
Why doesn't it work?
My MBP was shipped as follows:
For Apple computers that shipped with Mac OS X v10.5.5 to 10.6.7, Apple Hardware Test is located on the Applications Install Disc 2 and should be included with your computer.
But I have upgraded to Lion! Do I need the disk still? If so, why am I to lumber around a disk from a previous OS... good that I didn't throw it out!

I'm trying to find the answer to a similiar question. Here's my thread.
https://discussions.apple.com/thread/3549995

What are the meanings of Apple Hardware Test error codes 4m0t/4/40000003:hdd-1300 and 4m0t/4/40000003:hdd-1308?

what are the meanings of Apple Hardware Test error codes 4m0t/4/40000003:hdd-1300 and 4m0t/4/40000003:hdd-1308?

Thanks - Even though I'm years out of warranty I got chat help from Apple (I said they should help me since the codes aren't published.) We covered three different questions, and although I didn't get a specific decoding of the error code, I got confirmation of what other comments here imply - it might have helped that I indicated I'd already been here - and useful links to how to do back ups, including to CD(s). (I don't have a lot of data on this computer yet)
Now I need to figure out how to decide how hot-to-the-touch is "too hot" for the metal frame at the top of the iMac to decide whether I'm getting adequate fan performance or insufficient. While chatting I initially reported it was cool at the bottom and warm at the top. Apple hadn't asked, but their response prompted me to feel it again, and I'd say the top was hot, not warm - I updated but Apple didn't comment further except to conclude after addressing the other questions that I should take it in for further assessment - don't really want to bother with that.

MacBook won't boot after trying to repair with Disk Utility. Cannot boot in Safe Mode. Just powers down after about 5 minutes. Apple Hardware Test says error 4SNS/1/40000001:IG0C-0.265 But I cannot find anything on the net about it. MacBook 4,1 Intel.

Hello Everyone,
I am in dire need of assistance I am hoping someone could provide. I have a MacBook 4,1 with Intel Core 2 Duo processor 4GB Ram. It is taking over 10 minutes to boot up past the gray apple screen when I turn it on. First I cleared the PRam (?) then I checked the disk using Disk Utility Verify, and it said the disk needed repairs. So I ran the disk repair and it said it was unable to fix the errors on the HD.
I did a little research and tried booting into the Single User mode, then running /sbin/fsck -fy. It said that it found errors but could not fix them. I ran it two more times as suggested and got the same result each time. I then tried rebooting and now instead of taking 10 minutes to boot up, it takes about 5 minutes on the gray apple screen and then just turns off. I started in Verbose mode to try to troubleshoot the error and it appears the last thing to come across the screen before power down is a message "Apple Yukon 2: RxRingSize <= 1024....etc".
I decided next I would run the Apple Hardware Tester. The test came back with an error code "4SNS/1/40000001:IG0C-0.265". I am very good at searching the web but I could not find any errors that had the IG0C or IGOC or any combination at the end, but plenty of 4SNS/1/40000000(1) errors with different endings. From what I can tell people are saying anything with 4SNS/1/4000000 is a logic board failure, but this computer was literally just booting this morning until I did the /sbin/fsck -fy.
Any suggestions are welcome and appreciated.
Thank you for your time.

You've a couple of issues .... when Disk Utility tells you it can't repair a drive, if the error is a soft error, like an invalid tree or node, Disk Warrior (or TechTool Pro) can handle it. However, if Disk Warrior (or TechTool Pro) can't handle it, you can erase and write zero's to the hard drive and restore to it, or you can buy a new hard drive. Sometimes running SMART Utility can provide additional insight into the health of the hard drive.
THe 4SNS error is a sensor error. You could install iStat Pro to see if something is indeed getting too hot or remaining room temp or less. You may need to take it into an Apple shop so they can use their thermal diagnostics to test and isolate it further.

Question on Apple Hardware Test Results

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