Apple Hardware Test: Basic and Extended versions?

Does anyone know the difference between the Basic and Extended versions of the Apple Hardware Test? My MacBook Pro's logic board has been replaced, and now the Basic AHT reports no problems, but the Extended version crashes (stops, cursor freezes) when it gets to "Testing main logic board". I know the Extended test does a more thorough test of the memory, but apparently it does something different with the logic board as well. Anyone have any idea?

Well, thanks, that I knew, but was wondering if anyone could tell me just what "more comprehensive" consists of. Anyway, I think I've figured out at least one clue: I noticed that by the time the Extended test got to the logic board the fans were running pretty high, indicating that the computer was hot; and when I ran the Basic test right after, it crashed also. Conclusion: there is some component of the logic board that passes when cold, fails when hot. So the MacBook Pro has gone back to the repair shop, in hopes they can figure this out.

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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 for iMac

I recently ran the Apple Hardware Tests. The extended test showed the following code: 4M0T/40000004: HDD - 1332. Does anyone know what this code means?

It means there is a fan issue (4MOT) on the hard drive (HDD). The 1332 is the fan speed, as I recall. It means the fan is running outside of the parameters the system thinks it should be running at. If you don't have it already, you can download iStat Pro to monitor your hard drive temperatures. It may be an issue, or something to keep an eye on, and may require a service visit.

Files/Folders Sticking to Mouse Pointer - Not Releasing (Reset PRAM & Apple Hardware Test Fail to Run)

I've been having two issues with my Late 2008 MacBook Pro 15-inch - Running OS X 10.8.5 (Mountain Lion). Unable to Reset the PRAM and Run Apple Hardware Test (AHT).
On a random basis - File/Folder icons are Sticking to the Mouse Pointer - Not Releasing. I've done everything from trashing finder preferences, making sure Universal Access preferences are off, Restoring Defaults in the Energy Saver System Preferences, Resetting the System SMC. Another post mentioned that this is being caused by the Graphics Driver not working correctly - and mentioned to put the MBP to sleep, then wake it up, and the files/folders are no longer sticking to the mouse pointer. This works for me and released the sticking items in the Finder.
OK, Good this is a simple fix, BUT, what is really causing this issue, and how may it be fixed or repaired?
I also tried to Reset the PRAM and Run the Apple Hardware test (AHT), and these both fail to run on my MacBook Pro with OS X 10.8.5.
1) Resetting the PRAM:
Shut down the MBP, press the power button, and hold down at the same time <option><command>-P-R. The Reset PRAM process never starts up, but rather I receive the Padlock/Password Login which logs me into the Restore System Utilities. I'm unable to Reset the PRAM.
2) Apple Hardware Test (AHT):
Shut down the MBP, press the power button, and hold down the "D" key, the system boots up as normal and does not enter the AHT.
The File/Folder Finder sticking to the mouse pointer issue is very annoying. Does anyone have a solution to resolve this issue?
- Cheers

HI Barbara,
It sounds like the hard drive is failing or has failed. Boot from your Mac install disc and if you can run Disk Utility in case the startup disk needs repairs.
Insert your install disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
*(Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)*
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
When you are finished with DU, from the Menu Bar, select Utilities/Startup Manager.
Select your start up disk and click Restart
While you have the Disk Utility window open, look at the bottom of the window. Where you see Capacity and Available. *Make sure there is always 10% to 15% free disk space*
If you cannot boot from your install disc, try booting in Safe Mode
What is Safe Mode
Carolyn

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.

How do I run the Apple Hardware Test? Its not on my DVD and the Internet-connected version tells me my computer isn't supported!

I have a mini - late 2010 2.4 ghz core 2 duo - that just started black-screen crashing and failing to wake from sleep. Up to a few dasy ago this was a really bulletproof machine! When trying to restart it afer a crash it sometimes emits three weak beeps (sometimes more).
Apart from spontaneous motherboard failure (??) I can only guess that the RAM failed (an 8GB upgrade installed last fall). I pulled one 4GB RAM board and the mini booted again! But it still sometimes fails to wake from sleep, and sometimes give the three beeps. I've run REMBER (a memory test program) on one of the RAM boards and it passes the test. My next step is to test the second one -- but whether it passes or fails there seems to be something else going on.
I'd love to try the Apple Hardware Test but:
- pressing D on startup has no effect (even when starting up with the original install DVD)
- pressing Option-D brings up an Internet-loading screen that brings up a Hardware Test screen then tells me my computer is not supported.
Is the AHT simply unavailable for my model of Mac? And/or is there any way to test my hardware?

The 2010 Mac Mini's came with a 2 DVD set, a Mac OS X Install DVD (22691-6657-A) and an Application DVD (22691-6658 -A). The Apple Hardware Test is on the Application DVD (22691-6658-A).
see > Intel-based Macs: Using Apple Hardware Test

Disk repair and Apple Hardware Test says HD has no problem but grey screen still persists on MBP

5 days ago while on vacation, my MBP just froze with the grey screen, apple logo and spinning gear.
I performed all that was instructed on the following discussions:
http://support.apple.com/kb/TS2570
except Archive and Install installation of MAC OS X and Erase and Install MAC OS X since I was able to save my files in my husband's MBP via Firewire Target Disk Mode. At this point, I am still apprehensive in erasing my files and installing again the MAC OS X.
When I did the Disk Repair under the Disk utilities, it says that my Mac Os X is ok. (It also said ok when I did the fsck -fy when I till did not have my CD when I was on vacation)
I also tried the Apple Hardware Test (AHT) to further l test the hardware of my MBP and performed an extended checking and after an hour, its says that my HD has no problem.
Yet, after all these, when I restart my computer, it still has the grey screen with apple logo and spinning wheel!
Can anyone tell me what else can I do??? Appreciate any help!

I like the free demo of SuperDuper to make clones. It's free, Leopard and Snow ready and is easy to use. If you buy the full version you can do incremental backups.
You should use Disk Utility to do a Disk Repair, as shown in this link, booted up on your install disk, before you make a clone of it. I use DiskWarrior for that instead.
I then partition my external disk, in Disk Utility, with a partition that is the same size , actually a tad bigger, as my system disk. I then use SuperDuper to clone my system disk over to that partition.
With a clone on an external FireWire drive (USB drives are not bootable on PPC Macs but are on some Intel Macs) you can bootup on it to do your repairs, on the main drive, or just run your Mac anytime you have trouble with your main drive.
That's why I like clones better then Time Machine. You can just bootup on them and use your Mac.
On the DiskWarrior thing, I use DW once a month to try and catch errors in my system from getting too far out of hand. It has repaired every little and big issue I have ever had with my three Macs.
And I have had times when Disk Utility's Disk Repair says everything's fine but my system was still having issues. Disk Utility, in my experience, cannot be totally relied on to find and report all issues. It just isn't robust enough.
I run DiskWarrior, it does find errors, repairs them and I'm back in business. I swear by it!
DALE

Apple Hardware Test (Perform Extended Testing)

Hit the 'E' key to select Perform Extended Testing if you are unable to select it with a mouse.
I've been working on my wife's new iMac (I7 27") that she purchased a few months ago. Because it is so new, I wouldn't even waste my time on it and just sent it back to Apple to have them look at it (currently suffering slow startup times), however we recently moved overseas to Kyiv, Ukraine. During the troubleshooting, I found the following site:
http://support.apple.com/kb/ht1509
which informs users how to use Apple's Hardware test. Unfortunately, the app only recognized the wireless keyboard and not the wireless mouse. I didn't know who to contact to have the webpage updated because there is a way you can enable the extended hardware test from the keyboard (by hitting the 'E' key). Unfortunately, I had to figure this out on my own after exhaustive searching on the internet and websites. Hopefully, someone can pass this information along. I wish the app was more keyboard friendly.
I see some other posts that I haven't tried yet, so hopefully they might resolve me issue.
If I can't fix the problem, I'm going to have to see if there may be a rep in this country who to replace/fix the unit.
Kevin

Yesterday I ran the Apple Hardware test ( Version 3A181 - Perform Extended Testing ) from my MacBook OS Install DVD and Everything passed 100% ( entire test took 57 minutes and 15 seconds )
Forgot to mention after the Apple Hardware test was finished No Problems Were Found...
This isn't making any sense to me - Any Suggestions to what the cause of these Safe Boots may be ?

How do I run Extended Apple Hardware Test imac 21.5 mid-2010 mavericks

How do I run Extended Apple Hardware Test imac 21.5 mid-2010 mavericks? I have tried to start my computer holding down the "D" key but my iMac simply just restarts as normal.
I have checked the list of iMacs that can be upgraded to do an internet Extended Apple Hardware Test and I do not have one of those computers.
I cannot find any solution as yet.
I do not have the start up disks or the usb disks.

You can't run the hardware test without the installation discs.
Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity

HT201257 Holding down "D" no longer starts Apple Hardware Test! Any idea what's happened and how I fix it? Or do I need to go to the Genius Bar? MacBook Pro with Lion Preinstalled.

I have a MacBook Pro with Lion Preinstalled, so AHT was present on the hard disc and worked when the product was new. One of the first things I did from new was run AHT and it worked fine. But now it doesn't start - instead the machine (eventually) boots into normal OS X.
Holding down "D" no longer starts Apple Hardware Test! Any idea what's happened and how I fix it? Or do I need to go to the Genius Bar?
Software Mac OS X Lion 10.7.3 (11D50b), if it makes any difference.
Any ideas?

Thanks. However, even with an internet connection that doesn't work for me - the machine just (after an extended delay) boots normally. It doesn't download.
Option-D works for an Internet-based AHT. However that only works with an internet connection. It doesn't seem to download it and install it - it needs internet every time.
Any idea how my local copy of AHT disappeared? I haven't repartitioned the drive or knowingly deleted anything. And how do I reinstate it (because if you need AHT your hardware problems may preclude internet access!)?

Apple Hardware Test (Extended) not progressing

After upgrading my white MacBook (13-inch, mid 2010) from Snow Leopard to Lion, i was getting Kernel Panics, maximum of 5 min after startup. So i decided to downgrade back to Snow Leopard.
I erased my hard disk, tried to install SL from the DVD that came with the MacBook, i got a Kernel Panic. I tried it for 6 times, all with the same result.
I made the Apple Hardware Test, it passed.
Now i'm trying the Apple Harware Test (Extended), it's been almost 6hrs and here's the status:
Testing Memory
No error messages
Pass Number: 1
Time: stuck on 2hr 15min 49sec
Progress Bar: about 13%
However the mouse is still responsive. Is it normal for the test to take this long.
Thanks
PS: i tried the option-commant P R before running this test, and i dont have any peripheral connected

I have had endless issues with kernel panics since Lion. Rolling back to SL won't save you, because the last couple of updates to SL added in the cause of the panics:
Some combination of multitouch trackpad drivers and the graphics card drivers.
So, what I've done, and it seems to work better ( I can use this POS laptop for more than an hour now) is:
System prefs: turn off all the multouch stuff. All the gestures. Off.
Also, battery life is low because this os constantly writes to the hard drive and uses the network card. If you happen to push the system while you hear the fans spin up as it receives a push notification ...panic.
Spotlight has big problems with Lion. I stopped it from indexing almost everything, installed quicksilver, then turned off indexing on the drive. I uninstall flash unless I need it also.
kernel panics for me would always feature AppleHWSensor in the panic log.
60% triggered by me using the expose show desktop guesture. However, I assigned that to a keystroke... works fine.
I've lost 3 hard drives to this garbage, ( you can't keep on just turning off modern unix systems, via kernel panic)
Try what I suggested:
No Flash until you need it.
Turn off all the multitouch stuff in trackpad prefs
stop spotlight from indexing your logs, and Caches. Then turn it off.

Kernel Panics, Sudden Logout and Apple Hardware Test

Hello,
I have been experiencing Kernel Panics and Sudden logouts twice a week. I thought it was strange, because my boss just bought me the MacMini with 8gb RAM preinstalled.
I want to solve the problem, but I don't want to send my machine to support in vain.(because the MacMini is actually owned by the institution I work in, and those things take time).
So I ran some diagnoses I heard about on the internet, but I don't know what they mean, or what I should do with it.
I made two kind of diagnoses:
I tried to run Quick Apple Hardware Test.
I tried to run Mac version of memtest in single-user mode.
I made both diagnoses with each memory separatedly, in every slot combination possible, and both memories together.
Everytime I tested both memories together, AHT froze while testing memory, and memtest resulted in failures.
Everytime I tested a memory module separatedly, memtest and AHT gave no errors.
Is there any explanation for my Mac Mini not like my both memory modules together?
I updated OS X to 10.7.3 with combo update, and FileVault(don't know it makes any difference).
I made all tests with no peripherals other than a DVI monitor on HDMI out, a Magic Mouse, and a Apple (wired) Keyboard.
What should I do?
Should I send it to support and spend my next month without a machine?

If you're able to boot, launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Console in the page that opens.
Select the most recent panic log under System Diagnostic Reports. Post the contents — the text, please, not a screenshot. For privacy’s sake, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post "shutdownStall" or "hang" reports.
If you can't boot in the usual way, try a safe boot. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Safe mode is slower than normal, and some things won’t work at all.

Apple Hardware Test (Extended) (Trustable???)

Hi everyone, I have encountered a problem for quite a long time and that is the boot-up time is slower than others and I have posted a few posts on different discussion boards (My iMac 3.06 GHz - 45-60 seconds) Others: 30-35 seconds
I finally executed the Apple Hardware Test (Extended) it took about 1.5 Hour and it said "PASSED" So does it mean I have (100%) no problem with my iMac although the boot-up time is still slower than others?

Hardware test only tests for known deviations from specifications at the time of the software's release. That said, it can capture issues with some bad RAM, but not all*:
http://www.macmaps.com/badram.html
Slow boot time is not something I'd run hardware test for. I'd run it for
1. kernel panics*:
http://www.macmaps.com/kernelpanic.html
2. odd behavior in the screen graphics which results in something more than a refresh issue, such as a scrambled screen. A scrollbar that is slightly offset the other can happen because of refresh issues with some programs that aren't optimized for the GPU and/or CPU or operating system. A pixelated square which follows the cursor often can be a GPU issue.
3. Freezes which can't be explained by non-Apple hardware, non-Apple software, or Apple software that is not in the range of specs of the current machine.
4. Sudden system shutdowns not caused by Energy Saver settings, or user induced shutdowns.
5. Issues not occuring because of insufficient disk space*:
http://www.macmaps.com/diskfull.html
6. Or issues not occuring because of a bad directory or permissions*:
http://www.macmaps.com/directoryfaq.html
7. Issues which don't go away with an erase and install of a supported operating system, and known compatible hardware.
- * Links to my pages may give me compensation.

Apple Hardware Test, What is the Extended Test?

Hi. Using the Apple Hardware Test under disc 2 of the iMac's (late 2009) there's a checkbox for an extended test but it takes significantly longer compared to around 3 minutes only with a normal test. What does the extended test that the normal test have? Does it test more parts in the iMac?
Is there a third-party that's better than Apple Hardware Test that can test every bit of hardware in the iMac including it's power supply, internal battery charge, transistors, capacitors (if there are capacitors that are about to burst or are not delivering the proper voltage or current), if every pixek in the LCD is good, if the speakers are not torn, etc.
Gbu.

The extended AHT does a much more extensive set of tests on your RAM.
An alternative memory tester is Memtest which is a terminal command with Rember being a GUI layer for memtest.
There's also the diglloyd tools memorytester but it is not free.
AHT does video testing but I am not sure how extensive it is. And I'm pretty sure no utility exists to do component-level validation. Does such stuff like that exist for any piece of electronic equipment (TVs, radios)? That's what volt meters are for and possible test points on the pc boards.
I should add there are utilities like iStat Menus which are capable of displaying temperatures, volts, amps, watts of all many components of the hardware. But they just display the info, they aren't testing the stuff. It's up to the person looking at that info to decide if something is too hot, drawing too much current, etc.

New RAM and issues with apple hardware test

I just upgraded to 4gb of Samsung memory in my Macbook Pro. I had several issues with the computer continuously rebooting. I went into Apple Hardware Test and tested the memory. One of the dimms failed immediately so I pulled it and tested the other. It seemed to just go to around 6-10 minutes and just not do anything after that. The cursor still moves but nothing else.
I had them replaced with Samsung original even though the computer came with Nanya. My previous Macbook Pro had Samsung and I had good luck with it. This is a Santa Rosa platformed 2.4 Ghz version with the 7200 rpm 160 gb hard drive. I'm also running Leopard but that should be independent of the apple hardware test since the OS is not required to boot into it.
Any help is greatly appreciated.
Thanks

Evidently its not freezing. It just doesn't update often. Its at nearly two hours now. I wasn't giving it enough time to run.

Apple Hardware Test: Basic and Extended versions?

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