Hardware Test doesn't boot

I have a macbook Pro 2.2 GHz Intel Core 2 Duo with 2 GB 667 Mhz DDR2 SDRAM on 10.6.8.
I purchased a universal DVD of Snow Leopard.
I have removed all external devices except the Keyboard and Pilotmouse Mini Bluetooth wireless mouse.
Restarting after the tone, I hold down the D key and the computer boots to my desktop.
What is the issue?

Thanks,
I will use the original DVD.
It would be nice if Apple, in their Articles (i.e. http://support.apple.com/kb/HT1509) would state that the hardware test is not on the universal disk.

Similar Messages

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!

Ugh/ kernal panics / apple hardware test will not boot / help

so my first thought is to replace all my memory and I even have some coming via OWC -- but it seems silly just to replace memory on a hunch and randomly. So I run rember and get an all cler on all my memory. Can this really be soo? So I think - try the Apple Hardware Test.
I hold down c key as 'puter is booting and I get command line screen that says
"invalid memory ascess at %srr0:ae0c0108
%srr1: 0c01086F
bad bus info crc-16"
than it tells me to type in mac-boot to boot --but it will not boot - the next screen just says command line ok
what should I do next
this machine has been acting up for over 6 months and its driving me nuts -- I bought the memory as a "quick fix" but now I am starting to have my doubts. It would be cool to know before I decide to install it so I can return it for my $ if my hunch is wrong --
help! and thanks!

I can give you some general advice about buying memory:
The question then becomes what if memtest passes it all... I couldn't complete the cloning of about 220 GB of files from one drive to another with the original MacWarehouse chips in place, but could when they were removed.
I have had quite a bit of experience testing memory, most of it grey market stuff that I salvage from trash cans and such like place. I have found some memory that worked perfectly and never gave me any problems. I have found some memory that gave me kernel panics. I have found some memory that are somewheres in between: they seem fine at first, and then when you start to run lots of apps or copy large files that's when the problems shows up, and the problems are subtle -- once in a while a task would randomly crash, but restarting the task would make it OK, etc., etc.
I've had a PC133 stick that repeatedly tested and passed on memtest until the 4th pass, then an error showed. After the error showed, there were lots of errors.
For my own use, I do not use any memory that fails memtest at all, since I am swimming in memory anyway. I usually test them overnight. Certainly when buying new memory I expect them not to fail memtest when run overnight (usually about 6-7 passes).
I'll use memory that fail occasionally in client stations that are not function critical, but my experience has been once you get some error in a memory chip, it gets worse with time.
I want to avoid if possible having the machine down for hours at a time to run memtest in Single User mode as it's serving up genealogy databases on 4 different domains, as well as static pages on 8 other domains as well as being my every day work-a-Mac.
If you're serious about hosting those domains, I suggest you buy a Mac Mini for your clientstation and let the server be the server.
sending CL3 chips maybe the Apple Hardware Test is expecting to see CL2.5 which is what the 3 chips I have to do work are.
CL3-PC3200 chips can pinch hit for CL2.5-PC2700 chips in some limited circumstances, but they were sending you CL3-PC2700 chips in place of CL2.5-PC2700 chips. I smell herring.
or are they really not the chips the label says they are?
Chips are sometimes mislabeled, due to operator error.

Passed hardware test, won't boot

I am trying to get my 2008 iMac running again. I replaced the hard drive after it quit working. I have the boot cd in and when I ran the hardware test there were
No issues. All that I get is the missing file (flashing question mark) screen. I can't get it in verbose, or boot it from the cd. I've been using mac since the early 80's and have never had to have one professionally fixed. Any ideas?

I know... I can't figure out why it won't. I've even tried multiple keyboards to be sure... It stays on the gray screen longer than usual, and goes to the missing file icon.

Apple Hardware Test doesn't happen???

Hello,
My Mac is quite unwell and I believe the hard drive is failing.
I have just performed my third erase and reinstall since Friday.
Only this morning I discovered the Apple Hardware Test.
I've erased the hard drive so the Apple Hardware Test had been deleted.
I'm supposed to be able to do by holding down "D" and starting up with the Install Disc in, however, the computer just boots as normal.
Any ideas how to get the AHT?
Cheers.

You can setup iCloud eMail even in 10.4.11, or 10.5.8...
Do not delete the old account yet. sign up for an iCloud account if you haven't.
I understand .mac mail will still come through. Do not delete the old account yet.
You cannot use .mac or MobileMe as type of Account, you have to choose IMAP when setting up, otherwise Mail is hard coded to change imap.mail.me.com to mail.me.com & smtp.mail.me.com to smtp.me.com, no matter what you try to enter.
iCloud Mail setup, do not choose .mac or MobileMe as type, but choose IMAP...
On second step where it asks "Description", it has to be a unique name, but you can still use your email address.
IMAP (Incoming Mail Server) information:
• Server name: imap.mail.me.com
• SSL Required: Yes
• Port: 993
• Username: [email protected] (use your @me.com address from your iCloud account)
• Password: Your iCloud password
SMTP (outgoing mail server) information:
• Server name: smtp.mail.me.com
• SSL Required: Yes
• Port: 587
• SMTP Authentication Required: Yes
• Username: [email protected] (use your @me.com address from your iCloud account)
• Password: Your iCloud password

Hardware test doesn't start?

hello, i'm reaching the point where it says "probing... wait up to 4 minutes" and nothing happens after these 4 minutes. how long did you wait? i find it very strange since i never waited any probing on my mac mini, and the current machine works flawlessly.

thanks for the reply. i have 512 mb ram. i did try it again for 10 minutes, same thing happened except the trackpad and keyboard froze this time! it's ubelievable, because i have absolutely no issues with the macbook, everything runs perfectly!

MacBook Pro 17" suddenly shuts down, connected to power, hardware test normal

We have a MBPRO 17/2.16 CTO MacBook Pro 17" 2006 that will suddenly shutdown while in use. It is plugged into power. All hardware tests normal. Any ideas?

Doesn't sound good. A negative hardware test doesn't really mean much. Try this:
Intel-based Macs: Resetting the System Management Controller (SMC)

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.

Hardware test extended -- how long should it take?

Running an AHT on my iMac 21.5 Late 2009 (HD is about 300GB w/ 12GB RAM), and initial test was quick and no issues found. Decided to then do extended test (just to be safe & curious to see what difference there was), but 2hrs in it was still showing it had a long way to go before finishing.
Questions:
Would extended AHT tests reveal anything serious the basic AHT does not test?
How long should an extended AHT take? iMac seemed very hot at the time of the testing
I understand Apple Stores will do free 15min test; is the AHT basically same test store personnel would run?Without getting into detail (too convoluted to describe here as no real pattern to my issues w/ Imac), I basically want peace-of-mind that issues I'm having from difficulty ejecting volumes (system says disk is in use when doesn't appear to me it is) to Apple apps (iTunes, Safari, etc.) taking very long to open ever since I installed Mountain Lion. I'm going through separate tracks to determine if issues are software-related (not hardware) but while I'm at it, I'd also like to safely rule out HW problem(s).
Thanks in advance.

1. The extended test looks for problems slowly, so it may find problems that a basic test can't find.
2. The extended test, depending on your memory, takes an hour or more, and it will increase if you have more memory. It's normal that you feel your computer hot during test, so don't worry.
3. Apple Hardware Test is different than that test. The test that Apple can do is more exact and it might detect problems you can't find in Apple Hardware Test. For example, problems with the graphic card or similar (Apple Hardware Test doesn't detect some problems)

Hardware Test results OK, but...

I added memory at a point before I began experiencing system freezes. Is it possible that something could be intermittently wrong with the memory, but the Apple Hardware Test doesn't catch it?

OK... Memtest ran all night in single-user mode and everything passed.
The reformatting a little over a week ago wiped Applejack, so I just reinstalled and ran it in full auto mode. It finished quickly and didn't reflect any abnormalities.
Apart from Applejack and Disk Warrior, which I bought because of the system freezes, there isn't any new software that would be conflicting. Nothing is in /Library/StartupItems except two folders for Pro Tools (which has been on my HD for several years without trouble) and a folder for Pace Support (iLok dongle). There is also nothing in my user (Admin) login items except iCalAlarmScheduler and System Events.
Again, the freezes (no error message is displayed) have occurred both while running various software and with nothing except the Finder running. Is there anything else I can try if another freeze occurs?

2011 MBP 17" won't boot Hardware Test

My MacBook Pro is acting strangely lately. When I close the lid, sometimes it doesn't go to sleep. Also, when I shut it down via the menu system, it will go to a blue screen and just hang there for 30-60 seconds before shutting off. Sometimes it just goes to that blue screen while doing random tasks.
Almost every time I'm hooked up via Thunderbolt->HDMI, when I unplug the cable (disconnect from TV), the computer goes to a blue screen.
I'm trying to run the Hardware Test, but right when that OS9 menu comes up, the computer shuts down instantly. I've tried holding F2 while booting as well as holding 'D' while booting (with USB OSX 10.6.7 Install DVD inserted). No dice with either one.
I'm running 10.6.8 with 16GB of SuperTalent RAM. I have a 120GB Intel 320 SSD in the optical bay and the stock 750GB  HDD in the stock position.
Is my laptop now a dud that needs replacing?

Actually, I might have solved my problem. The last time I set this laptop up, I had directly copied my SSD to another HDD. When I put the SSD back in, I copied it back from Disk Utility on the boot up disk, again. That's right around when all of my problems started.
To solve it, I did a Time Machine backup, put in the install USB and formatted the drive (one-pass zeroed-out, to be exact), and re-installed 10.6.7. I updated it to 10.6.8, then used migration assistant to pull my documents/apps back onto the drive.
Since then, everything has been working very well. The screen has only turned blue once (in about a month), and it was only briefly. I haven't tried to run a hardware test from the install USB, but I'll do that soon to see if it works now.
I also took it into an Apple Certified Technician store before fixing the SSD issue, and they could find nothing with the hardware test they ran on it.
TL;DR = do a fresh install and then bring your files back.

What Do I Put On the com.apple.Boot.Plist to Make Snow Boot to the Apple Hardware Test By Default?

Hi. My main OS is 10.7.2 Lion but I had installed Snow 10.6.8 into a USB external drive. I will use Snow for apps that run well in it and for the Apple Hardware Test which is was my main reason why I installed Snow. Whenever I boot to this iMac's Snow DVD installers (disc 1 or disc 2) or to the one installed on the external USB drive and press D before the gray screen and 'ding', it doesn't want to go to the Apple Hardware Test. I want ot use AHT because I have no budget for similar apps like TechTool Pro.
Why is pressing the D not working by the way?
Is there a way to edit the Snow's com.apple.boot.plist to always boot to Apple Hardware Test (AHT)? What should I write in it. I'll be using Smultron to edit the plist instead of Terminal.
Thank you in advance.
Gbu.

Put the AHT disc into the machine, restart, holding down the D key. AFAIK, you can't do the way you're envisioning.

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.

Mac Pro Won't Boot, Hard Drives Are Fine, Passes Hardware Test

I have a Mac Pro 1,1 that will not boot anymore. The hard drives are just fine. I put them into another Mac Pro 1,1 and they started up fine and that computer is running great. I have replaced the RAM, put in new Hard Drives, I only have a keyboard, mouse, and display plugged in to it, and it still won't boot. What happens is this:
Boots up, shows the gray screen. Shows Apple Logo. Goes to Black with mouse cursor, stays at the black screen. I can move the mouse cursor as normal. Sometimes it turns into a color wheel, but most of the time it's a normal pointer.
I have run the hardware test several times, both quick and extended. Everything always passes the tests. I can boot into target disk mode and use the disks fine via firewire. When I try to boot from a Lion USB disk, or a Snow Leopard DVD, it always does the same as above and stops at the black screen. Basically, once it gets to the point where it loads an OS X system, it stops at the black screen as if something isn't working right. Any thoughts?

once it gets to the point where it loads an OS X system, it stops at the black screen as if something isn't working right.
That is the point at which the graphics card starts the Mac OS X loaded graphics Driver, and it may indicate that your graphics card is broken.
Try Safe Mode (hold down Shift at Startup). It takes five minutes to check the Boot drive, then display a login screen. You need your username and password to proceed, even if you normally auto-login.
Safe Mode uses only "simple" graphics. It does not load the graphics driver.
If you need a replacement card, I recommend you skip over all the refurbished and repaired old graphics cards and install nothing older than the Apple-Firmware 5770, about US$250. It works in every model Mac Pro, and drivers are in 10.6.5 and later.

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.

Hardware Test doesn't boot

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