Hardware Test Problem

I can't use my wired keyboard or mouse when booted from the Apple Hardware Test disc. Cursor remains frozen in the upper lefthand corner, and when I turn the optical mouse over there is no red light as usual. I then have to shut off the computer by the button on the back. This has only happened since my computer started refusing to sleep the hard disc a few months ago.

Yep, no problem running disk utility. Ran it this morning and it repaired a problem in the directory, ran it several more times and everything was ok. Repaired permissions too. I've only had the mouse problem when trying to run hardware test.

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Apple Hardware Test problems

Hi All. I have a very weird problem here, as I can't get the Apple Hardware Test to start on my late 2008, 2.66 MBP15 inch model# MC026LL/A (released early 2009 as a quiet upgrade from 2.53). Here's the story:
I opened up my machine as usual one morning, and the optical drive made a very weird noise I never heard before. So I decided to run the Apple Hardware Test (AHT) to see if anything was amiss. Well, I inserted the second install disk, held down the "d" key, and restarted the machine. It began to boot into the hardware test, but just after the AHT screen appears the computer just shut down. This happens every time I try to run the AHT.
I went to an Apple Store while I was on holiday in Brisbane (they don't have one here in Adelaide), and the genius said it was likely a bad optical drive. Well, I returned to Adelaide last week and had the local Apple Authorized store replace the optical drive. Tried to run AHT once again, and the same problem persists. So the original problem wasn't with the optical drive.
I thought maybe I accidentally used the startup disks for my wife's late 2008 15inch, 2.4, MBP (the one actually released in late 2008). I've looked around for the other sets of disks and can't find them. So here's what I'm asking help for: can someone who owns a 15inch MBP 2.66 15-inch (released in early 2009, model# MC026LL/A ) please tell me what the part # is for their set of install disks? It is written on the plastic sleeves of the install disks. And, could this person please tell which version of AHT is written on the disk itself? The set I have (which I think might be my wife's) has AHT version 3A158.
Might this be the problem, or should my computer still be able to run the hardware test using my wife's disks? I know they are both technically late-2008 15inch unibody MBPs, but I think my 2.66 (again, quietly updated and released in early 2009) might require a different AHT version, which would explain my inability to run the test. If not, what might be causing my computer to not run the AHT? I tried reinstalling OS X to no avail.
Thanks for all of your help!

I think I share your skepticism--if your Mac was shipped with the later version of the OS, you should not have been able to do a clean install with discs of an earlier version. It looks like some machines originally shipped with OS X v. 10.5.5 and others with OS X v. 10.5.6. I don't remember just when 10.5.6 came out.
Your two machines are likely very similar in build, and maybe similar enough for the OS to install. It may be that the AHT is specifically designed for the hardware in each machine, and that would be a bit different.
As someone else said in another thread, there ought to be a tutorial on how to keep track of the original install discs since they are always getting lost. Maybe a secure note in the keychain or something like that.
Out of curiosity, does the AHT work on your wife's machine? If not, there could be a problem with the install disc itself, and if so, you might be able to get a free replacement under warranty.
Good luck!

Mac Pro Restart and Hardware Test Problems

This appears to be a continuation of a thread I began titled "MacPro Restart or Reboot Problems" in which the reboot problem still seems to be evident.
Initially, I was having problems with rebooting but after rebuilding my directory with DiskWarrior, the issue disappeared. Then recently, I entered my password and the Mac restarted itself and the same problem is back where the drive seems to try and "catch" but can't.  And now its back to  happen anytime I want to re-boot (however, this tends to be rare.)
So I ran DiskWarrior again and it reported no problems. Then I tried to run Apple Hardware Test and about 40 seconds into the test, with the message "Testing memory" stated, the fans begin to spin at a high pitch.  The system locks up and the only recourse is to press the on/off button on the front of the Mac Pro.  If I try to wait it out, the Mac Pro will scream and spin until I restart.
I've ran the same AHT test on an identical Mac Pro that is only a few months older than this one and even using the Extended test, the AHT takes a little over four minutes.  And the Testing Memory message appears early in the test  and moves on.  Then, much later in the test, the fans spin up to the same high pitch whine like the problem Mac Pro.  But only one at a time (there seem to be three of them) and each one quickly quiets down once they're tested.
So that's the beef. Something I've considered is this Mac Pro came with two Gigs of Apple memory installed. I'm wondering should I uninstall one of them and re-try the AHT to see if it could be the memory.
Any suggestions would be appreciated!  Thanks!

I took my G5 to an Apple Store (2 hrs away) and had a Mac Genius look at it. I told him about the reboot issue and the weird skippy sound it made when it tries to reboot. When I mentioned about the G5 locking up during an AHT, he thought that sounded like a hard ware issue. So he ran a diagnostic test with his Apple CD and the G5 tested fine (?!!) We then ran my original AHT disc that I had brought with me. It too tested fine-- it didn't lock up at all! We rebooted like a half a dozen times-- with both keyboard and via the menu-- and it rebooted like a champ. Everything we tried, the G5 rebooted fine. I asked if maybe the keyboard, mouse or monitor back in my office could be part of the the issue. He replied anything connected to the G5 could be a culprit.
So I brought it back and hooked it all back up. And it would not reboot! It tries to reboot and makes the same sound, same problem! I disconnected and replaced cables and keyboards and mice. No dice. I took the G5 down to an edit bay where we have an identical G5 (same 2 GB of memory, maybe 3 months older) and connected its power cable, mouse, keyboard and Cinema Display monitor to my G5 and tried it. No reboot, same problem. I reconnected the older G5 back to its original cables/setting and it reboots-- no problems.
I'm at a loss. I guess I will go about doing a zero drive process and see what that brings... However, one thing I have seemed to confirm: the skippy sound that continously emunates from the G5 as it attempts to reboot seems to be coming from one of the optical drives (the G5 came with two DVD optical drives). I'm wondering if I go in and disconnect the optical drive(s), will that lead to something??
BTW, I did hook up the G5 to another monitor, thinking that maybe it could be a graphics card or monitor issue with the original display. I used a PC monitor with a DVI connector and the problem was still there.

Apple Hardware Test Problem!!!

I've been having problems with my 4 month old G5 and so I ran the AHT.First I ran the extensive test and the whole thing froze after 3 minutes.I turned the computer off and on again.It started up like nothing hapened.I restarted,ran the short test and the same thing happened at 1 min 55sec of the test. The computer seems to be running fine but when it's frozen up I'm afraid I have two red led's on the front (I take that's the logic board?) it seems to be LED#1 and LED#3.
I wouldn't bother anyone but the closes reliable Apple Certfied Service Provider is 230 kilometers away...seriously.
Thanx a bunch!

Thank you guys so much! I just want to clarify this
one more time (I am new the whole Mac culure)
My AHT corresponds to Mac OS 10.4.4 making it
useless, right? I did read quite a few posts about
outdated AHT but I didn't get if there was a way to
get a newer version.
A new version of OSX will not affect the hardware test because the hardware test doesn't use the operating system. It will run even if the hard drive is empty. It is possible that a firmware update might require a new version hardware test. If the hardware test is failing, remove any non-Apple hardware (RAM, PCI boards, etc.), unplug all FireWire and USB devices (except mouse and keyboard), and try the test again. If it still fails, call Apple. If you need a newer version of the hardware test, they will let you now.

Apple Hardware Test Problem Detected

I did an Apple Hardware Test, (where you restart your computer while holding down D and Apple detects if you have an problems on your computer). And I was notified that I had this problem: "4SNS/1/40000001:1DOR-0.000" What does this mean? How do I fix this problem?

Help here > Mac notebooks: Apple Hardware Test may report SNS alert when power adapter is not connected

Apple Logo would not display and Hardware test problem?

HI all, sorry i am new to posting here, so apologize if my answer to the below is in this forum but i could not find it. What it is:
My mac mini when I started it up today, was not displaying the apple logo, it was just showing its white screen and it just would not move from it. I tried doing an apple hardware test by re-starting holding the button D while re-starting nothing happen. I had to disconnect all external items such as my external HD and ipod and then it became back to normal.
1st question is, why did this happen and how?
2nd question is, how come my apple hardware test does not work?
I have tried apple hardware test using the install disc for a mac pro which has leopard on it, for my mini as i don't have the install for my mini any more. But even then I should still be able to use the apple hardware test without the discs though shouldn't i?
Please note though my HD has been replaced twice before by apple. Can anyone give some input?
Also my mac is an intel based back got its late 2006 model.
I have also run disk utility and it has found nothing wrong at all with my mac.
Thanks in advance for your replies.

If AppleCare gives you a Tiger Install Disc for your system, accept it, since it's the way to perform the AHT on your machine (also, it's free!).
About the Leopard disc, I don't know which OS you're running, since you changed your profile info from 10.5.6 to 10.4.10. Are you using Tiger Or Leopard?
If you're running Leopard, you'll need a Retail Leopard Install Disc (the one you can pick up from a store shelf) to do an Archive and Install. Your machine was made in 2006, before the release of Leopard, so there's no Leopard machine specific disc for your model.
Archive and Install is the way to reinstall the Operative System without loosing your files and settings.
Also, if you ever need to repair your startup volume with Disk Utility, you'll need to boot from the install DVD, and you can only do it with the install disc of the OS you're currently running. You can't use a previous version OS install disc, as it could have nasty consequences on the directory structure integrity.
If you want an "el cheapo" Leopard Retail Disc, you can search for it on the web. Also, when Snow Leopard hits the street, some retailers will probably sell out the previous version inventory.
Good Luck.

Apple Hardware Test problem on Mountain Lion

I;ve been trying to do the Apple Hardware Test with no success. I've tried holding down D and option-D yet nothing. My macbook just boots up as normal. It is recommended to download the EPI firmware upgrade fro Lion recovery. That one is just not compatible with my system and could not install it. What's next? Can I just download the AHT from somewhere?

It depends on what OS your mac shipped with. Which OS did it ship with?
http://support.apple.com/kb/ht1509

I have an iMac mid 2010. After Disk utilities said the drive was corrupt, I ran the hardware test (extended) 3 times. No problems. I than ran Disk utility again and got 2 messages in red-keys out of order, and --Volume corrupt, can't be repaired. I tried

I have an iMac mid 2010. After Disk utilities said the drive was corrupt, I ran the hardware test (extended) 3 times. No problems. I than ran Disk utility again and got 2 messages in red…keys out of order, and ……Volume corrupt, can't be repaired.
I tried to do a system install, but message said…disk can't be changed. Will a complete erase and install fix this ?
Everything is backed-up.

There's hardware and software.
Your drive could physically be in good condition but something has caused the file structure to be messed up (it just happens sometimes). The directory that keep track of files is corrupt. Disk Utility can help determine if that is the issue. In some cases it can repair the problem but it cannot do it to a drive that is being used to boot the system while you are doing that. You have to boot from another drive. Some things DU cannot repair and you need to try a stronger utility such as Diskwarrior.
A failing hard drive (one with mechanical issues) can be a cause of file structure issues but this is by no means always the case. Apart from looking at the SMART diagnosis feature of Disk Utility (and smart isn't totally reliable) there often isn't a way to tell if a drive is failing until it suddenly happens, which is why you need to maintain backups.
In your situation it does sound serious and not just minor directory corruption. You can try erasing (formatting) the drive, You may need to do this if it is really corrupt, in which case there could be underlying physical issues. I use old technology but if you have the patience you can try erasing the drive with the security option of writing zeros once (don't do more unless you are going on a 3 week vacation). This makes the drive not simply assume everything is okay by forcing it try every part of the drive by writing data. If something is gong wrong you may find it marks a lot of bad sectors, or flat out refuses to format. Then you know you need a new drive.

MacBook Pro will not boot up. Hardware test found no problems.

MacBook Pro will not boot up. Hardware test found no problems.

Sorry. What I mean is I selected the SL boot up in the start up panel and it would not boot into the cd. The CD rom sounds like it just keeps reading with it slowly loading from grey screen to blue screen to the Block screen. Almost like it is booting into normal mode from the hard drive.
What I can't understand is why it runs fine is Safe mode?
Also why do I get a " this disk cannot be used to start up your computer" message on my hard drive when trying to install Lion in safe mode? Well why not it's the only hard drive in the computer?
The first screen shot is the Tech tool showing everything passed the hardware test is safe mode.

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

Problem apple hardware test

my macbook pro early 2011 i5 is too slow so i use onyx with no result so i make an Apple Hardware Test for check and i have a alert! a problem hardware with code:
4SNS/1/C0000008:TPCD--124

That sensor is reacting to the temperature at the CPU power bus. Make an appointment at an Apple store genius bar for a free evaluation. This is a hardware problem with no software solution.
Ciao.

Can anyone explain why I cannot restart my computer after apple hardware test with no problem found

Can any body help
when starting computer apple hardware test appears
following test, no problem found but cannot restart computer
apple hardware test appears again
How can i skip apple hardware test?

Have you read for possible solutions over in the "More Like This" thread over here?----------------------->

Macbook pro hardware test dectect a problem

I use apple Hardware test and it detect a problem displays an error code 4HDD/11/40000000:SATA(0,0) also it freeze very frequently and is slow need help.

4HDD: Hard disk
> (option key) System info>Hardware>serial ATA> S.M.A.R.T. status: Verified?

Hard Disk failed but no problems detected in hardware test

My macbook crashed yesterday when I was running a photo sideshow. When I turned it on a flashing question mark appeared. I have followed instructions in the mac manual and looked at some discussions here. If I hold down the options key on startup there is no hard drive there and there is also no have drive if I run the disk utility but when I ran the hardware test it said no problems detected and I have repeated the test several times. This might mean there is an issue with the software but how can i reinstall it if I can't see the hard drive? I'm not sure what to do or what the problem is so please help
Thank you

Did you ever receive any information on how to solve this? Did you have to send your computer back to the mfgrer?

HT201257 I just bought an imac in september 2012. And i just find out that my microphone is not working. So i did an apple hardware test and with no problems found? I have sound but no one can hear me, not even the computer. Should i bring it back to

I just bought an imac in september 2012. And i just find out that my microphone is not working. So i did an apple hardware test and with no problems found? I have sound but no one can hear me, not even the computer. Should i bring it back to the store

Before you go through that trouble open About this Mac > More Info... > System Report > Audio and see if the system actually knows it has a microphone. Then you can look into Applications > Utilities > Audio MIDI Setup and see if the microphone is there, select it and make sure the sliders are set to full. Then in System Preferences look for Sound > Input and make sure it shows up there and the sliders are at least half way up. If none of that works do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
then go through the process of looking for the microphone again as the reset may reenable the mic.

Hardware Test Problem

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