Can't run hardware test because probing never completes

I start the hardware test, it tells me probing will take about a minute and I can't do any tests until it completes, the blue bar goes about 95% of the way and stops, I go away and come back half an hour later and nothing has moved. Has anybody seen anything like this?
Is it because I have an Acer monitor and a no-name three-button optical mouse? Does the Audioworks speaker system plugged into the headphone jack have anything to do with it?
I wanted to do a hardware test because a particular application gave me kernel panics. Apple support walked me through erasing the disk, reinstalling the OS, and recovering my settings and data from Time Machine. I did not reinstall the offending application and I have not had any more kernel panics. But I still can't run a hardware test.

I have a workaround, but not a real solution. I unplugged the no-name mouse and then started the hardware test from the applications install DVD. Probing completed, the hardware test completed, and the final report was "no trouble found."
It's now Apple's problem, because a hardware test should either report trouble or no trouble, but should never hang, no matter what hardware is connected.

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Can I run hardware test and repair a disk with Leopard using 10.3 DVD

Hi,
I'm trying to decide whether to partition and clone Leopard to my external or partition and install Tiger on the external.
My iMac came with 10.3.6 install and hardware test DVD's and they (Comp USA) gave me a Tiger drop-in DVD. I upgraded to Leopard through a family pack DVD (when I told my friend I would by one of the install's I thought I would get a DVD, but you only get an install license, oh well). By the way, Leopard runs great in my rev A iMac G5.
I'm trying to figure out which os to use on the external as a safe-boot incase something happens. If I clone Leopard onto a partition for backup/boot, can I still use the Disc Repair (not permissions) and Hardware Test from the 10.3 or Tiger DVD's to maintain that permission should something bad happen? The way I see it, i'll be able to repair permissions on both the main and external drives using Leopard's disc utility, but I'm not sure if I can repair a Leopard disk or do Hardware Test on that disc using an earlier version of OSX install/Hardware Test DVD's.
Will earlier versions of OSX repair a Leopard disk and be able run Hardware Test?
Thanks for the help,
LowBb
Message was edited by: LowBb

Yes, that seems to be the case, but I didn't do good enough research when he asked if I wanted a license for Leopard. For some reason, I had it in my mind that a Family pack came with multi DVD's for people. Maybe that's why he sold me a license so cheap. I thought I was getting a bargin, you get what you pay for.
So, I have the hardware test DVD's that came with the iMac and the Tiger drop-in is just an upgrade with no Hardware Test, you are correct.
But: (let me make sure I have this right) I should not use the 10.3 DVD's or the Tiger drop-in to repair a disc (not permissions) on a hard drive running Leopard. Is this what you are saying? I kind of thought this would be the case. If it is, I'm going to install MY stuff that I have the DVD's for on the external as an emergency boot disc.

Can you run Hardware Test from older DVD?

Hello,
My mini2,1 came with OS 10.4. I have the two original system discs. SInce I bought it right before 10.5 was released, Apple sent me a single Leopard Upgrade disc. Does anyone know if the Apple Hardware Test is on the 10.5 upgrade disc? If it isn't, can I run the test from Disc 1 of the original 10.4 DVD's even though the mini is now running 10.5?
Thanks in advance.

Excellent. I found the hardware test on the original 10.4 OS X Install Disc 1. Glad to know that the test on the DVD is for my specific computer hardware, and that the current OS on that machine does not matter.This was not clear to me and I could not find an answer on Apple's help pages. And that explains why the hardware test isn't on the 10.5 upgrade DVD.
Thanks BD and Niel.
Dr. Rock

Can not run hardware test on nMP

I have Mac Pro late 2013, 6 cores, 16 Gb RAM, Yosemite. I have followed Apple instructions how to run hardware test. Both using D and Alt D at startup. Unplugged devices, plugged devices. The only thing I see is a row of languages and option to shut down or restart with black background I check English and hit return. After that nothing happens. Is there somone who could explain ?

Using Apple Diagnostics
Using Apple Diagnostics - Apple Support
I take it you are using a wired keyboard and you are not seeing the display:

Can't run hardware test

I have a Mac Pro early 2008, os 10.3.3. It is running two monitors, a 30 inch cinema display and a nec multi sync ex231. The video card is nvidia quadro 4000. Recently both monitors are going black after the computer has been on for a short amount of time and I have to manually shut down and restart. I get a message about no DVI. This is increasing with more and more frequency.
I would like to run a Hardware Test. I am shutting down the computer and holding down the D key after the startup chime but before the grey screen appears but hardware test does not appear. It just goes to the screen where I choose a user. Any help please? Thanks.

AHT is only installed to the Mac when using the original OS installer. I you have migrated via updates it can still be installed, however it is removed when 'clean installing' newer OS's since the disk is erased. The grey OS disks will have instructions printing for starting AHT on the relevant DVD.
You can find a list of downloads & instructions for finding out your model info (it is easier than searching on Apple.com for them). Only use the ones linked on Apple.com.
https://github.com/upekkha/AppleHardwareTest
Try burning it to a CD in Disk Utility - I had limited success with that so I made a script to copy it onto a USB stick…
https://gist.github.com/drewreece/2e5eed7dbfbd5dd7e929
It should also be possible to copy the .diagnostics folder back onto the system disk, but that also failed for me too.

Can't run hardware test to resolve charger light issue.

I've got a macbook pro 17" early 2009 model w 2.93 processor (5,2) with mountain lion (osX 10.8.2) installed on it.
My chargers work but the light cuts in and out, regarless of which charger I use. I want to run the Apple Hardware Test.
I've tried option-D on start, which I'm told won't work on this model. I've also tried D on start. In both cases it just boots to the login screen.
I tried downloading the Apple Hardware Test image for this model from Apple and after converting the image discover it has folders, but there are no files in those folders (yes I turned on hidden file viewing)
How does one run the hardware test on MBP 5,2 once mountain lion is installed.

The original installation DVDs are indispensable for many reasons and can be a challenge to replace. Contact Apple. Explaining to them exactly what you need is the tough part. They will charge a nominal fee for replacement DVDs.
You will need your MBP's serial number - it is printed on the rear case near the display hinge.
In the meantime try an SMC reset. It may fix the problem.
Resetting the SMC on Mac portables with a battery you can remove
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery (to remove the battery - click here: MacBook or MacBook Pro).
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.
Still having problems? Replace steps 6 and 7 with the following:
6. Reconnect MagSafe power adapter.
7. Press the power button to turn on the computer,
8. Then reconnect the battery.

Can't run Hardware Test at all. PLEASE HELP!

When hold 'D' during startup, nothing happens.
When I insert my installation DVD and perform the same task, my MBP ejects the DVD.
When I try and use the option + D command, and try and connect to my network, the password isn't correct. This password has worked for everything else I've ever used over said network.
I'm officially out of options, can someone please help?

I'm using a disc that I got from the Apple Strore because I lost my original.
Retail installation DVD & the System DVD are 2 different types of discs. The System DVD is machine specific which what you need to run AHT. Per the KB Article I linked: "If you updated your Mac to OS X v10.8.4 or later, use the system software disc or USB flash drive that came with your Mac."
You can get replacement System Install & Restore CD/DVDs from Apple's Customer Support - in the US, (800) 767-2775 - for a nominal S&H fee. You'll need to have the model and/or serial number of your Mac available.
If you're not in the US, you may need to go through the regional Apple Store that serves your location to find the contact number. Here's a list of links to all of those - http://store.apple.com/Catalog/US/Images/intlstoreroutingpage.html Another resource: International Support Phone #s.

HT201257 I have a slow boot up, so I wanted to run Apple Hardware Test. AHT never starts

I have a slow boot up, so I wanted to run Apple Hardware Test.
AHT never starts based on http://support.apple.com/kb/HT1509 but AHT does not come up. Tried it 20 times, no success. I have iMac 2011 w/ Lion. What should I do.

Hi Titan,
My system didn came with the disk. I have used disk utility to repair the disk, because it showed a boot sector problem during disk verification process. I started disk utility using Cmd+R at startup. The problem was fixed. Not the disk verifies without error.
However, the initial gery screen at startup still take more than two minutes after with the apple icon appears.
Thanks.

My 2006 iMac running Snow Leopard won't boot even after erasing and re-installing Snow Leopard (via my MacBookPro), either from the HD or DVD drive. Can't get it to run Hardware Test. Disk Utility says disk OK - files are there. What can I do?

My 2006 iMac running Snow Leopard won't boot even after erasing and re-installing Snow Leopard. I erased and re-installed by putting the iMac in Target Disk mode and usin my MacBookPro as the host. But after numerous attempts I still can't get it to boot either from the HD or DVD drive. I just get the white screen after the wheel stops spinning. I can't get it to run Hardware Test - just get the white screen. If I use Disk Utility via my MBP it says the disk appears OK. All the Snow Leopad files appear to have been installed. What can I do?

Hi-NRG Bwoy wrote:
I erased and re-installed by putting the iMac in Target Disk mode and using my MacBookPro as the host.
Reet the SMC and the PRAM
 Cheat sheet to help diagnose and fix your Mac
Perhaps you installed the wrong version OS X onto the iMac, you can't use the disk from another Mac.
clean the disk.
If it's not working then use this method to create a bootable 10.6 USB from the iMac machine specific 10.6 disk or the 10.6.3 retail disk on your other Mac, use it to boot the iMac with.
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
How to erase and install Snow Leopard 10.6

PB screen broken-using external monitor now-but can't see hardware test

Hi. I have a 15" PB (1.33GHz) that was recently dropped. The screen was decimated... unusable and can see maybe the far left 1" of the screen... the rest is 100% unusable. So currently I am using a 19" monitor. I was wondering a few things... Is it possible to somehow disable the screen in the computer? I removed it, but the PB nows thinks there are two VGA monitors hooked up (?)... so I put the screen back in and I just sleep it everytime I start up and wake it with an external mouse so I can set my resolution on my external 19" monitor. It's not a huge deal if there's no way to disable it so that I can just remove the thing and the powerbook can be my keyboard
Anyway, I also can not run the hardware test because the F7 key (to mirror) wont work with it. Anyone have an idea what I can do about this? Somehow force the G4 to recognize the external monitor in the hardware test mode?? I suspect some other problems with the G4... such as a bad ram slot (the lower one) - it doesn't recognize any ram sticks that I put in there. I've read that lots of others had this problem... and even though I have applecare, I suspect that Apple won't recognize this since it has been dropped.
Any help is appreciated. Thanks

I assume this is due to the fact that system detects your internal monitor as default one, and that is there where system sends main data. In order to force system send data to the external monitor, get a mouse and physical keyboard, close MB lid, and then press any key on the external keyboard.
when you get there, go to system preferences/display, and manually move the Apple upper bar to the external monitor, then choose mirror; ultimately, set optimal resolution.

Running hardware test

Hi,
my intel imac has been acting balky lately- running a bit slow at times. It recently started "blacking out"- shutting down somewhat randomly and being slow to restart. I'm trying to run the hardware test from the installation cd's that came with my machine, but I'm unable to get it to run.
I've tried using installation disc 1 (my machine came w/ version 10.4.4 of the OS), installation disc 2, holding down "c", holding down "d", holding down "apple-d" etc to no avail. Any ideas how I can get the hardware test to actually run?
I just want to try to diagnose the random shut downs.
Thanks!
Jason

have your tried starting up in safe mode ?

24" iMac summer 2008. CPU fan runs at highest speed, some times goes to "sleep" mode. t' is about 35'- 42'C. Run hardware test: 4sns/1/40000000:tlop-130.000, next time 4sns/1/40000000:tlop-128.000 errors. Reinstalled all softwere. Nothing changed.

24" iMac summer 2008. CPU fan runs at highest speed, some times goes to "sleep" mode. CPU t' is about 35'- 42'C. Run hardware test: 4sns/1/40000000:tlop-130.000, next time 4sns/1/40000000:tlop-128.000 errors. Tried SMC, NVRAM, PRAM. Reinstalled all softwere. Nothing changed.

I suspect you have hardware problem with a fan sensor. Doing a software install will not help the machine needs to be taken in for service. If you run Apple Hardware Test in Extended Mode it should reveal the error code. If it does not then run AHT an additional 2-3 times to be sure in Extended Mode. Each pass will take about 30-60 minutes.

Can not run the test form using servlet (patch 8)

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Why can't I run Hardware Test?

I am trying to figure out if I have a hardware issue and was told to run the Hardware test. my iMac is the late 2010 model and shipped with Mac OS X (10.6.4) and currently upgraded to Mountain Lion 10.8.3.
I have tried running test by restarting and pressing "D", option "D", and both ways with and without the original applications install DVD in. But every time I just get the login screen that I normally get. Am I doing something wrong?
This is above my pay grade, but I am having trouble running Adobe's Illustrator and a colleague using the same set up said they had the exact same issue and it turned out to be bad RAM. So, I am trying to run the hardware test to determine if I have a hardware or software issue.
Thanks in Advance,
Rob

See this thread and baltwo's directions, which will enable you to start the AHT directly from the boot volume, that is if the AHT (.diagnostics) isn't already present.
https://discussions.apple.com/thread/4427984?start=0&tstart=0
But first, using the starting suggestion there, unhide hidden folders and see if you have .diagnostics in the given location. If you don't, then proceed with the rest of the suggestions, but be sure to use the corrected Terminal command later in the thread.
Still, disc 2 and the D key should work. Don't know why it isn't.
Also, if you just want to test the RAM, get Rember. But close all applications first. It may be necessary to run several loops before it finds anything.
http://www.kelleycomputing.net/rember/
Message was edited by: WZZZ

I want to run hardware test on my Power Mac G5 but it isn't working.

What I tried:
I have the original install disc 1 which came with the machine in the optical drive (which is the usual one). I printed the hardware test guide which is on the disc, disconnected everything but mouse, keyboard and monitor. I tried to boot, pressing the Alt/Option key, but the "system picker" or boot menu won't show up. What happens is what somebody described as for "old world" macs: my system boots with no finder window open and without the white screen and apple logo (which usually shows up during startup).
I also tried something I found in a user manual pdf for Power Mac G5 on the apple archives: Booting and press-holding C (btw it's strange that this manual says something different than the manual on the original disc). What happens here is that my machine is booting from the original disc but it boots in Installation mode. I looked at every drop-down-menu I could find there for several times but there is definitely no hardware test, since this is thought to install Mac OS 10.4.
I also tried the Intel-way and holding D during boot, but no surprise, it only booted the first drive (like it should on a pre-Intel).
But something about this all is very strange. Yesterday night I tried all these steps above and when I was close to fall asleep in front of my monitor it suddenly worked and I made it finally into the hardware test. If I remember correctly, I was holding down the C key, but as I said a was pretty dizzy and can be mistaken. I ran hardware test once enhanced and it stopped during ram, giving me an error code I wrote down. But since I made it into the test and was so tired, I thought "lets continue tomorrow" which was my epic fail for this year, I guess. Today I repeated every step, every way I tried but it just doesn't work; and I read sooo many forums and Q&A's.
By the way here is my error code which appeared after 49 minutes (to proof I didn't dream this):
"2MEM/1/4: DIMM3/J14"
Why do I want to do this?
Around the 1st of September this year my Power Mac G5 didn't boot anymore (the fan speeding issue). After reading a little online I came to the point that its either my Ram memory or its my graphics card or its Pram or NVram. I resetted Pram and NVram, I also replaced battery and then it booted again for one day but on the following day it didn't. I repeated every step but the battery replacement since it was a brand new one. It can only be Ram memory or my Graphics card (which is the standard one for this machine).
Since then my Power Mac was rarely in use, only two or three times in Firewire Target Mode to access some of the data. Yesterday I wanted to do this again; booting it in FT mode but I must have connected my keyboard too late during booting and my machine surprisingly booted just fine! I was so stoked about this! Then I wanted to find out why it didn't work for a while and started several steps. Ran maintanance scripts, repaired the system volume, checked for enough free space, checked my Ram and then I stumbled on the interwebs over the hardware test which is delivered on the original install disc 1 and I never heard about this before (strange enough). What followed is written above.
What do I have?
I have this:
Modellname:
Power Mac G5
Modell-Identifizierung:
PowerMac7,3
Prozessortyp:
PowerPC G5 (3.0)
Prozessorgeschwindigkeit:
2 GHz
Anzahl der CPUs:
2
L2-Cache (pro CPU):
512 KB
Speicher:
4 GB
Busgeschwindigkeit:
1 GHz
Boot-ROM-Version:
5.2.4f1
Seriennummer (System):
CK52107BRTY
Hardware-UUID:
00000000-0000-1000-8000-000D93640EEE
Sorry for the German but I think you still get it. The PPC was delivered with 10.4 and I bought it used from a friend with his original Update disc to 10.5 and I updated to the max, 10.5.8. I have 2x 1TB drive (similar ones) together as a Raid0 and three partitions on it. (I know now that it doesnt make that much of a sense).
Yeah so I really want to find out why my machine didn't work for three months but since it is so old and I'm a student, it doesn't make any sense to me to go to an Apple store or similar to have it expensively serviced since there is no guarantee that these guys really help you (heard some stories about the local stores here).
Is there a way to re-access the hardware test and run it to the end?
As you might have noticed, I'm pretty desperate. I would soooooooo appreciate it!!
Best,
Erik

"2MEM/1/4: DIMM3/J14"
Replace the memory in the DIMM 3 slot.
If you are running Mac OS X 10.5 you can use this program to test your G5's memory:
http://www.kelleycomputing.net/Rember/
It will subject your RAM to a more thorough test than Apple Hardware Test.

Can't run hardware test because probing never completes

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