Apple Hardware Test Freezing During Probing...

How long does the Apple Hardware Test to Probe?
I only have the keyboard and mouse plugged in...
and it still takes ages...
What is going on?

Well upon doing everything I can think of...
I use a Microsoft Mouse... and I removed it and replaced it with my old mighty mouse and now it doesn't freeze! and my mac is ok! It passed all the tests

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Apple hardware test freezes

My iMac has been having frequent freeze-ups - i get the little black box that says i have to restart the computer.Tends to be memory intensive tasks - for example i can copy from one disk to another but can't clone.
I have been trying to use the hardware test from my original install disks. The only thing connected is the apple keyboard and apple mouse. Ram sticks are from crucial and i have had them in there since i bought the computer ( bought it when they discontinued the 17" model). Hardware test freezes:
1.first time while trying to do its initial probe
2. second time at the language selection window
3. third time 1min 30sec into the extended check
4 fourth time at 22sec into the regular check.
if i shutdown with power button, unplug and wait maybe 15 minutes, the computer will boot into the usual desktop but sooner or later i get another freezeup. I am concerned that the operating system will get borked from the frequent powering off with the power button.
do these symptoms suggest any particular problem? could a failing battery cause this?

Simple way to test whether or not this is a memory issue is to remove one stick of RAM and run AHT again. Does it lock up? If yes, swap the sticks of RAM. If it still locks up, your RAM is likely fine.
You can also inspect the RAM sticks for any signs of physical damage. It's rare, but it does happen, that you'll see some kind of residue that looks like it came out of one of the chips. It's usually white in color, but it doesn't have to be. Electricians and what not tend to call that "letting the smoke out" of a chip. If you see anything like that, you know that bit of RAM is dead.
Kernel panics can happen from bad RAM, but more often it's the result of something even worse. So, hope that all it is is some bad RAM. If you're a religious person, praying might be a good idea. The other alternative is the logic board is going bad, and if that's the case, you'll just want to buy a new computer.

Apple Hardware Test freeze on MBP 15 mid 2012

I changed the ram on my new mbp 15 mid 2012 from 4gb to 16gb. Now AHT freeze on Testing Memory with both type of ram, why? It's not my first time when I change ram, I'm on my 4th MBP. Any ideas? tks

Hi,
there is a known problem (I know it for sure from a friend that works at a apple service) with non retina mid 2012 macbook pros not responding in AHT test, most likely your RAM is fine. Just do MemTest and see if anything's wrong with it.
FYI
Reported this problem in bug reporter some time ago, the answer:
Engineering has determined that there are no plans to address this issue.
Clearley they know about it and don't want to solve it, to bad.

Apple Hardware Test freezes after 2 minutes

I have an early 2012 MacBook Pro with 8gb of RAM. Over the weekend I turned it on it ran very slow, to the point where I could only open up a finder window after five-ten minutes. My harddrive is still in tactic and the computer works fine in recovery mood. I did a PRAM reset and also SMC thinking that will solve the problem. Then when I went to turn on the computer it gives a loading screen for about a minute and then turns off. So I went in and ran a diagnostic test, both the extended and the shorter one. In both cases it gets to about 90% on the progress bar and then freezes. The mouse is still responsive, but it is very laggy. In the extended test it froze at 37 minutes and with the shorter test it froze after 2 minutes.
I was wondering if anyone had a similar issue and knew how to solve it.

Klawder1 wrote:
. We were however able to get into recovery mood if that counts for anything.
Did you Open Disk Utility>First Aid and run Verify and Repair? (When in the recovery partition)
Ciao.

Graphics card/logic board issues: Macbook Pro Freezing during Apple Hardware Test!

I have a macbook pro that was working fine then the screen started acting funny. It would sometimes "tile" up where you would see the same issue repeated over and over on the screen and then computer would freeze. Sometimes the screen would start to have a strobing look and then freeze. I thought the computer was crashing but once the screen froze but the processor was still running. I knew the computer was still processing because I was streaming a video online and the audio from the video continued to download and play event though the screen was frozen.
I went to the apple store and they said they think it sounds like failure of the hardrive, graphics card, display, logic board. A new hard drive was just put in the computer about 4-6 weeks ago, and if it is the other issues could be $500-$800+ to repair. I tried to use the Apple Hardware test (non-extended test) but it keeps freezes at 2 min 32 secs every time when it starts "testing the main logic board"....
Has anyone seen anything like this and have another way to test what the problem could be? Thanks!

I know you're in denial, but it really does sound like the motherboard or graphics board which is integrated with the motherboard. Yes, fixing these things will cost almost as much as a new MacBook Pro. Get a new one, take the HDD out of your old one, and start over again.

HT2644 What about self shutdown during Apple Hardware Test?

What about self shutdown during Apple Hardware Test?
How can i take error code?

I don't think you can. Have your computer serviced.

2008 iMac running beautifully untill recently. Screen glitches and freezing. Apple Hardware test showed error code 4MOT/2/40000004:ADD and I have not seen others with this code. Guessing it is a fan issue based on the ODD and HDD error codes

computer felt hot and while running apple hardware test the screen glitches covered the screen and it froze. Now computer wont boot up. Again AHT code is 4MOT/2/40000004:ADD and I have just seen ODD and HDD codes discussed on other threads.Those were hardrive or superdrive fans, so I am guessing this is a fan issue and then it fried by graphics card. Any help as to whether this is game over or worth repairing would be very appreciated.

You need to take it to your local Apple Store or AASP for a professional evaluation. Apple does not publish the codes from AHT, you can Google the code you got and see if you can determine what it means however the best method is to let a pro handle it.

Won't Boot to Apple Hardware Test or accept Boot Commands

Hi All,
I would appreciate some help with this issue, I am trying to boot up to the Apple Hardware Test on my Install Disk 1 that shipped with my MacBook Pro 2.4GHz Model #A1226 ordered new with 4 gigs of memory (around Aug. 2007). I am currently running 10.5.6 and the install disk of course contains the Tiger OS. I have nothing plugging into my computer, other than the Power Adapter. I have the proper install disk inserted in the computer and am holding down the "d" key on my built in keyboard throughout startup, but it will not go to the AHT. It simply boots to the normal login screen for Leopard. In fact the only boot commands that I see any visible or audible confirmation that it has taken effect is the option key, taking me to selecting a Startup Manager and holding down the Power Button gives me a tone from the internal speaker after a few seconds.
Below are what I have tried with seemingly no effect:
"d"
"c"
"t"
Option-Command-"p"-"r" (no beeps)
Command-"v"
Command-"s"
Shift (not sure I should see or hear any confirmation, I don't have any login items set right now so I can't tell if it has any effect)
I have not tried an of the networked drive boot commands as I don't have any networked drives
The only way I have been able to boot from either the optical drive or another disk is either holding down the option key during boot up or selecting the drive from the startup manager in system preferences.
I can't seem to access the AHT an in any way. The reason I am trying to access it is because I have had a few weird intermittent problems that I can't put my finger on and would like to be able to rule hardware out.
I also just replaced my HD with a WD 320 gig drive after my original drive failed due to a physical error. I just restored my data, and all seems to be running well after a permissions repair and a disk repair while booted up on my install disk.
The intermittent problems I was talking about are very vague and rare so I is difficult to describe them other that just a hunch that something is still a bit off. One is the display, every once in a while, showing what looks like a massive bar code or UPC code on my screen. This is not like the bands with soft edges that seem to be a well documented issue with the early MBP but transparent lines of alternating width and brightness with hard edges. Again it looks just like a UPC code transposed on my screen. The other items are random freezing of the OS or the mouse and the fact that my keyboard does not respond to any but a few boot commands. Again all the things are either rare and intermittent or do not come up in daily use of my machine. But when taken together, seem to add up to the conclusion there is still some issue present (at least in my mind).
To recap my specific questions relate to not being able to run the Apple Hardware Test and many of the boot commands having no effect. If you can shed light on the other items mentioned, great!
Thank you!

At a guess, I would think this error code has to do with the video artifacts you are experiencing. You might try reseating all the cables to the display. If the position of the screen makes a difference, there may be damage to a cable, particularly where it goes through the hinge.
Apple is the keeper of the error codes. If you have access to an Apple Store, you could probably ask about this.
Don't know about the other intermittent problems. Does an external keyboard work? If so, there's likely a problem with the internal, maybe even again, a cable or connection.
You could also try creating a new use account and see if the keyboard and mouse problems persist. If not, there could be some sort of software corruption in your usual account. Ditto with the freezing.
Good luck!

Anyone Know what this apple hardware test error means?

Hi I've been experiencing some problems with my mac it gets to hot fans nerver go up not even with smc fan control installed and some times it freezes so i decided to run the apple hardware test that comes with the machine and during the memory part it showed me this error code
4MOT/1/40000003:HDD
Does any one know what this means or have any idea with what part of the machine it can be related to
Thanks hope sombody answers

If I had a hardware error detected by Apple Hardware Test (which in my experience misses the minor things) then I would be raising a case with AppleCare right away.
http://www.apple.com/support/contact/phone_contacts.html
You shouldn't have to deal with hardware failures on a Mac this young.
mrtotes

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.

Apple Hardware Test (AHT) Hard Drive Full Read Fail But SMART Status OK

I have a Mac mini Server from Mid 2010 running Snow Leopard Server.
Ocassionally, it'll freeze up with the spinning beachball wheel for a few minutes. This usually happens when opening an app or performing an app function from the menu bar. It's a pretty clean system—there are not many apps installed.
I suspect it's a hadrware issue. I ran Disk Utility's Permission and Disk Repair. All good. SMART Status is verified. So I ran the Apple Hardware Test. Everything passes except for the Hard Drive's "Full Read"—it fails because "Reading took longer than the average time". The Hard Drive "Short .. test" and "Check SMART Status" pass.
Does anyone have an idea of what's going on here? Is the hard drive the issue? I don't understand how there can be a read issue (or hard drive issue), when the SMART Status is verfied.

S.M.A.R.T isn't perfect. Neither is AHT for that matter, but if it is reporting that reading is taking longer than it should then an impending failure is likely. The occasional "wait cursor" appearance supports that diagnosis.
Consider yourself fortunate in that you still have the ability to back up anything important, and you can plan a convenient time for its replacement.

Error Code After Running Apple Hardware Test

I ran apple hardware test (I'm having problems where my computer freezes for like 10 seconds with the mouse being movable... but it happens very frequently. like once a minute. it's SOOO ANNOYING)
this is the error i got after running apple hardware test:
(it came out as a Mass Storage error... which is Hard Disk i guess)
**ERROR*CODE***ERROR*CODE**
2STF/8/3: S-ATA Bus 0-Master
**ERROR*CODE***ERROR*CODE**
Does anyone know what I can do to fix it. Apple Hardware Test only allows me to find the error and then restart or shut down... which is useless cause what is the error code supposed to mean. I've only got Apple 1 yr repair support left... so I cant call up Apple or anything. Does anyone know anything about this and what I could do to fix it!?
I know about this: http://www.apple.com/support/imac/repairextensionprogram/
I might go to the apple store, but I dont wanna make a trip out there for nothing.
Does anyone know what I can do or should I just take it to the apple store.

Actually, i just spent like 1 hr working with disk utility using the os x install disk and i think it finally worked. im so happy for myself! yay... i wouldnt accept no for an answer. Disk utility kept saying "oh first aid failed because it didnt exit right" or something... total garbage response... i kept pressing verify disk and then repair disk and then i did the verify permissions and repair permissions too... didnt really know what i was doing with the permissions... but it finally worked so thats all that mattered! yay... its back to normal!!

G4 that will not boot from any disc EXCEPT the Apple Hardware Test CD

We have a DP 1ghz Quicksilver PowerMac G4 that will not boot from any disc EXCEPT the Apple Hardware Test CD that came with the machine.
We were in the process of installing 10.4 Tiger before placing it for sale.
The Mac was originally OSX Server 10.1 that we later converted to a worksation running 10.3 Panther.
It has 1 GB of memory, 80GB hardrive, 250MB Zip Drive and a Radeon 7500 video card.
Since this machine only has a CD-R drive and not a DVD-R, we installed Tiger using another Mac via Target Disk Mode. The installation process went well, but when I tried to reboot I got a Kernel Panic right after startup screen with the grey Apple logo.
On some reboots we get to the blue startup screen, others it stops at the grey Apple logo, others a black box like the a Kernel Panic - but with no text. Twice it went directly into Open Firmware.
We have done the following during our troubleshooting:
- Reseat RAM, Video Card, Hard Drive, Zip & CD-R connections
- Remove RAM 1 stick at a time and reboot
- Replace RAM with RAM from another working Quicksilver
- Replace Video Card with one from another working Quicksilver
- Zap PRAM
- Reset CUDA switch
- Unplug the MAC and remove everything (RAM, Battery, etc) for 30 minutes and try to reboot
- Tried booting from the Macintosh Server G4 Software Restore CD
- Tried booting from Mac OS X Server CD
- Tried booting from AppleCare Protection Plan CD with TechTool
- Tried booting from Diskwarrior CD
- Tried booting from an external FireWire drive with a disk image of Tiger OS Install
- Tried booting with the hard drive disconnected
The Mac WILL boot from the Apple Hardware Test CD and will pass ALL of the extended tests.

Conventional wisdom says that any Mac that will not boot up from a System/Install CD OS 9 or an Install CD Mac OS X, has a Hardware problem.
The diagnostic CD is a red herring because it uses a very primitive method of reading the CD, and so does not properly represent the machines general ability to read CDs.
I would look at the CD drive cables, etc, and see if another drive gives different results.
You have not mentioned using the Startup Manager (option key at Startup) to do any checking:
HT1310- Startup Manager: How to select a startup volume

Apple Hardware Test on a late 2008 MBP new HDD

Hey Community!
I own a Mac Book Pro - Late 2008 shipped with OSX 10.5.5. Currently I a new 500GB HDD and a 265 SDD are running in my MBP. The Super Drive is in an external USB Housing. Current OS X is version 10.7.1.
I need to run the Apple Hardware Test, because sometimes the system seems to freeze for at least 30 seconds.
What I've already tried:
*) Holding down "D" at the startup -> nothing happens, normal startup
*) setting start volume to external fire wire optical drive, insert 10.5.5. Installation disc, restart, holding down "D" -> startup with installation wizard
*) same with 10.6 Installation disc
*) same with choosing the Backup Partition when holding down "Alt" at startup and then pressing "D"
Always, I was connected via WIFI and Ethernet.
Can someone give me an advise how to run the Apple Hardware Test, or how to reinstall it on the new SDD Harddrive, where my system is mounted?
Thank u and greetings from Austria
Claudio

Try using your disk utility to read the drives. I'm not at my computer now but if you go into utilities->disk utility you might be able to solve it from there.
Also try holding down the C key on boot or esc.

Can Apple Hardware Test disk work when a hard drive has no OS installed yet

I removed a bad original hard drive from a PowerBook G4 12" aluminum notebook. It made clicking sounds as it ran, and would not boot. I replaced it with a 320GB Western Digital HD. I also upgraded the original 512KB memory with 1GB.
Before removing the bad hard drive, I was able to boot just beyond the language selection dialog from a full installation CD (Mac OS X v10.2) while holding the "C" key during power on, but could not install it, of course, on the bad hard drive.
Now with new hard drive replacement in the PowerBook (formatted via fire wire from a MacBook Pro running Snow Leopard) and the upgraded memory, I ran a Disk Utility check via fire wire and found the new hard drive in the PowerBook to be in good working order and ready for an OS installation. However I can no longer boot the PowerBook G4 with the full installation CD in the customary manner, getting instead the flashing question mark over the finder folder icon.
I decided to see if there might be some other problem by using a PowerBook G4 Apple Hardware Test disk. Upon booting from the test disk, I get a message that declares the disk will not work with the PowerBook G4 machine.
What's up?
Message was edited by: techtoots

There's more to my original question than whats on the face of it. Please read more about this below. However, I will still wish to know if an AHT, say an original one if that's important, will do it's thing when no OS is installed.
Pretty sure that I'm NOT using either disk or sets of disks that came with this G4 PB. Included among what I do have are 6 grey disks:
__PB G4 Software Restore 1
__PB G4 Software Restore 2
__PB G4 Software Restore 3
__PB G4 Mac OS 9 Install v9.2.2
__PB G4 Mac OS X Install v10.1.4
__PB G4 Applications
And 2 Jaguar full install DVDs:
__Mac OS X v10.2 Install Disc 1
__Mac OS X v10.2 Install Disc 2
I was hoping to be able to find something useful among these disks - if not in a strait forward manner, them by some manner of hacking.
I know how to use my MacBook Pro create a disk image that will house any number of these DVDs. My thought is to create something that can be cloned to the PB G4 via fire wire. I just need to be sure how to daisy chain multiple DVDs in terminal mode, if more than one DVD is required in the cloning process.
I have placed an order for Leopard 10.5 - full installation DVD direct from Apple.
Once received, I will have 14 days to return it unopened. So, I want to be sure this PB G4 is operable before I break the seal on the Leopard package.
Therefore it's not so important that I clone everything from the original installation - just enough to see that the PB G4 boots and runs in Finder. If I can achieve that much, I will advance with Leopard 10.5 when it arrives.
My *PROCESSOR SPEED* is 1.33GHz
Other original specs:
L2 Cache 512 KB
Memory 512 MB
Bus Speed 167 MHz
Boot ROMV 4.8.3f1
Memory Slot 256 MB DDR-SDRAM

Apple Hardware Test Freezing During Probing...

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