Mac Mini G4 A1103 Apple Hardware Test

Hi, I would like to perform a Apple Hardware Test for my Mac Mini model A 1103, G4.
And original CD is missing. Is it possible to download it ? and where?
Thank you!

Nope, you will need to contact Apple and see if they still have a replacement Install Disc for your model.
see > Apple - How to Contact Us
Another option, is to contact your local AASP and have them do a hardware diagnostic test.
see > How to find your nearest Apple Authorized Service Provider (AASP) or Apple Authorized Distributor (AAD)

Similar Messages

Mac mini won't boot - hardware test error

my mac mini isn't booting... stuck on the grey apple screen with spinning circle.
have ran the hardware test on the OSX DVD and i get the following error
**ERROR*CODE***ERROR*CODE**
2STF/8/3: ATA-100 ata-6 - Master
**ERROR*CODE***ERROR*CODE**
i assume this means that the HDD is knackered ?

The variable reports on the hard drive are not entirely unusual with a drive that has problems, but it's not a good sign in general that you are having issues with booting to the install disk. That has potential to reflect a controller error that could be minor in nature and even be as simple as a poor connection on the drive carrier which has both drives mounted to it.
Try booting to the OS installer again. If you can get past the language selection screen it means OSX (the very basic version on the installer) has loaded, and that's a good sign. There's no reason from that point that the Utilities menu wouldn't pull down as normal and disk utility run from there. If you can get that far, see if the internal drive is visible on the left of the disk utility app, and if so, select it (there may be two entries for it, either will do) then click the repair disk button.

Apple hardware test for snow leopard

I've tried booting from the snow leopard installation disk i have, i've tried holding down both D and Command+D, and neither of these key combinations work. My macbook will just boot like normal. And it's not an optical drive issue because i can hold C and get disk utility. So is the AHT even on this disk?
Is there another way of testing the hardware or some kind of freeware i can get?

If your Mac came with DVDs, Apple Hardware Test comes in one of these DVDs. See > http://support.apple.com/kb/ht1509 Insert the DVD that contains Apple Hardware Test, and hold the D key while your MacBook is starting. Make sure your Mac is plugged in and run an extended test.
Apple Hardware Test is not included in the retail Mac OS X Snow Leopard disc because there are different versions for each computer

Apple Hardware Test Unavailable? Mac Pro 2008, Mavericks installed

Restarting my early 2008 Mac Pro with Mavericks installed while holding down the "D" key and it's just booting up like normal. Tried holding it before it shuts down, holding it after the startup tone, and holding it after the grey screen appears (which the apple site says is wrong).
Any suggestions?

That will only work with the original discs that came with the computer.
How to invoke and interpret the Apple hardware tests | MacFixIt - CNET Reviews
Using Apple Hardware Test

I have Mac Pro 2010 model and it's giving heavy fan noise,so run the Apple hardware test but it's showing the Error: 4SMC 1 40000000 please help me in this issue.

I have Mac Pro 2010 model and it's giving heavy fan noise,so run the Apple hardware test but it's showing the Error: 4SMC 1 40000000 please help me in this issue.

Same error information here.
https://discussions.apple.com/message/13083664?messageID=13083664

How do i remove a failed apple hardware test from About this Mac?

I ran Apple Hardware Test quicktest using the wrong disk/ version of AHT that did not support my motherboard. Now under About this Mac .. more detail.. diagnostics it shows this failed test. i want it out of there. Thanks, jim

Long story .. but board is a different model than original. ... bought water damage repair off of Ebay... got a call that it could not be repaired but they offered to replace the board for only 20$ more... so i let them do it. Original board was early 2008 2.4 GHZ Core Duo, new board is 2.2GHZ Core duo late 20007... they put an older board in than was original. i'm not real happy but it works... I guess you get what you pay for.

HT201257 mac os x 10.4.11 tiger: apple hardware test has detected an error (what does this mean): 4SNS/1/40000001:VDOR

Can someone help? I did an apple hardware test and it has detected an error: 4SNS/1/40000001:VDOR
What does that mean? Can i correct it myself? how?
my computer is "tiger" mac os x 10.4.11, Processor: 2.16 GHz Intel Core 2 Duo, Memory: 2.5 Go 667 MHz DDR2 SDRAM

Thank's for answering, realy appreciate your time,
A technician had installed last year "mac os x snow leopard 10.6" (family pack) at around $49.00 - I had originaly mac os x 10.4.11 (tiger). He had changed my hard drive, added memory: 2.5 Go 667 MHz DDR2 SDRAM, processor is: 2.16 GHz Intel Core 2 Duo (he told me he had to change my hard drive probably due to a power shortage. Before he did the changes, I had done a hardware test: it gave me the same error as today 4SNS/1/40000001:DVOR, He cleaned the inside, but he did not change any sensors. What am i to do???
Not too long ago i started having problems. (probably from a power shortage, at one point. I don't know if my external back up got corrupt. so i don't want to use it. He had eraced tiger 10.4.11 and installed snow leopard 10.6.
I eraced snow leopard and installed mac os x 10.4.11 (that came with my computer).
I wanted to install mac os x 10.6 (snow Leopard) without eracing tiger (chat sites say you can do that) but it said it couldn't use my hard disk because of my memory: my info says: used: 18,78 Go on the disk, available: 446.66 Go, Capacity: 465,44 Go
So that's when i did a hardware test with the CD1 of mac os x 10.4 (tiger) and that where i got the message.
If i have a sensor problem, then i guess i'm waisting my time trying to reinstall mac os x 10.6 (snow Leopard) or am i doing it wrong. I was told i could leave tiger there and upgrade directly to snow leopard, without installing mac os x 10.5 (leopard).
Thank again

How to run Apple Hardware Test on Mac Pro with ML preinstalled?

I have Mac Pro 5.1 (2012) which came with Mountain Lion preinstalled. It didn't have install DVDs. How do I run AHD? Restarting with D, or command+D, or option+D didn't work. It would just restart the OS. And Mac Pro didn't support Internet AHD eather.

Thank you for your reply, Carolyn.
I read this article. None of those applied to my case:
my Mac Pro came before 2013 and it doesn't have Apple Diagnostics built into it,
it doesn't have Apple Hardware Test built into it,
and my Mac Pro came with Mountain Lion preinstalled and it did not have system software disc or USB flash drive.
Restarting while holding down the D key simply doesn't work it just reboot back to the desktop.

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.

Apple hardware test error 4mem/9/40000000: 0x8475d598

Any help would be appreciated I'm at work and my MBP crashed twice (Running Traktor Pro 2 with Drobo Mini as an external HD via Thunderbolt. second display daisy chained on VGA with a rotating desktop image to the TV's ) ...Just got this error code from my late late 2011 15in MBP after it randomly restarted and I ran the hardware test
apple hardware test error 4mem/9/40000000: 0x8475d598
This was after it crashed earlier and I got this report:
Anonymous UUID:       5948A12D-654D-DE02-D43C-4073A8690165
Sat Jun 21 17:31:41 2014
panic(cpu 0 caller 0xffffff8000a2ebe9): "Spinlock acquisition timed out: lock=0xffffff8024478110, lock owner thread=0x8000000000000000, current_thread: 0xffffff8025f64cf0, lock owner active on CPU 0xffffffff, current owner: 0x8000000000000000"@/SourceCache/xnu/xnu-2422.100.13/osfmk/i386/locks_i386.c:36 5
Backtrace (CPU 0), Frame : Return Address
0xffffff81eb5f3ec0 : 0xffffff8000a22fa9
0xffffff81eb5f3f40 : 0xffffff8000a2ebe9
0xffffff81eb5f3f70 : 0xffffff8000ac989d
0xffffff81eb5f3fb0 : 0xffffff8000af3c76
BSD process name corresponding to current thread: com.apple.WebKit
Mac OS version:
13D65
Kernel version:
Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
Kernel slide:     0x0000000000800000
Kernel text base: 0xffffff8000a00000
System model name: MacBookPro8,2 (Mac-94245A3940C91C80)
System uptime in nanoseconds: 18623716072818
last loaded kext at 18480408803348: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f833c5000, size 49152)
last unloaded kext at 18566085554385: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f833c5000, size 32768)
loaded kexts:
com.TrustedData.driver.VendorSpecificType00 1.7.0
com.drobo.SCSI.ThunderBolt 1.1 [66012]
net.kromtech.kext.Firewall 2.3.6
com.attotech.driver.ATTOiSCSI 3.4.1b1
com.apple.driver.AppleBluetoothMultitouch 80.14
com.apple.filesystems.smbfs 2.0.2
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.filesystems.autofs 3.0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AGPM 100.14.15
com.apple.iokit.IOBluetoothSerialManager 4.2.4f1
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleMikeyDriver 2.6.1f2
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.kext.AMDFramebuffer 1.2.2
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHDA 2.6.1f2
com.apple.driver.AppleHWAccess 1
com.apple.AMDRadeonX3000 1.2.2
com.apple.driver.AppleMCCSControl 1.1.12
com.apple.driver.AppleIntelHD3000Graphics 8.2.4
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleMuxControl 3.5.26
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.SMCMotionSensor 3.0.4d1
com.apple.kext.AMD6000Controller 1.2.2
com.apple.driver.AppleIntelSNBGraphicsFB 8.2.4
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleUSBTCButtons 240.2
com.apple.driver.AppleUSBTCKeyboard 240.2
com.apple.driver.AppleIRController 325.7
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.iokit.SCSITaskUserClient 3.6.6
com.apple.driver.XsanFilter 404
com.apple.driver.AppleUSBHub 666.4.0
com.apple.iokit.IOAHCIBlockStorage 2.5.1
com.apple.driver.AppleSDXC 1.5.2
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.driver.AirPort.Brcm4331 700.20.22
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleAHCIPort 3.0.0
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
com.apple.iokit.IOSCSIParallelFamily 3.0.0
com.apple.driver.AppleThunderboltDPOutAdapter 3.1.7
com.apple.driver.AppleThunderboltPCIUpAdapter 1.4.5
com.apple.driver.IOBluetoothHIDDriver 4.2.4f1
com.apple.driver.AppleMultitouchDriver 245.13
com.apple.driver.AppleUSBAudio 2.9.5f4
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOBluetoothFamily 4.2.4f1
com.apple.driver.DspFuncLib 2.6.1f2
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOAcceleratorFamily 98.20
com.apple.driver.AppleSMBusController 1.0.11d1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleGraphicsControl 3.5.26
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.7.0d11
com.apple.driver.AppleSMC 3.1.8
com.apple.kext.AMDSupport 1.2.2
com.apple.AppleGraphicsDeviceControl 3.5.26
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleHDAController 2.6.1f2
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOHDAFamily 2.6.1f2
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleUSBMultitouch 240.9
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.6
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.2.7
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IO80211Family 630.35
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOUSBFamily 677.4.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: MacBookPro8,2, BootROM MBP81.0047.B27, 4 processors, Intel Core i7, 2.2 GHz, 16 GB, SMC 1.69f4
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1333 MHz, 0x857F, 0x483634314755363746393333334700000000
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1333 MHz, 0x857F, 0x483634314755363746393333334700000000
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.4f1 13674, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
PCI Card: scsi, SCSI Bus Controller, Thunderbolt@195,0,0
Serial ATA Device: Samsung SSD 840 EVO 250GB, 250.06 GB
Serial ATA Device: MATSHITADVD-R   UJ-8A8
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: BRCM2070 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Apple Internal Keyboard / Trackpad
USB Device: Hub
USB Device: Duet USB
USB Device: IR Receiver
Thunderbolt Bus: MacBook Pro, Apple Inc., 22.1
Thunderbolt Device: Mini, Drobo, 1, 26.3

The Apple Hardware Test error indicates a RAM issue. Install the original RAM and see if that improves the situation.
Also these items may perhaps be conributing causes:
TrustedData.driver.VendorSpecificType00 1.7.0
.drobo.SCSI.ThunderBolt 1.1 [66012]
.kromtech.kext.Firewall 2.3.6
attotech.driver.ATTOiSCSI 3.4.1b1
Ciao.

Apple Hardware Test & My Power Supply

I was wondering if the Apple Hardware Test does any check on the Power Supply.
I was planning on replacing mine on a Mac Pro (Early 2008). I have been having a constant freeze from wake issue, and the system refuses to power on from a cold start unless I let it rest unplugged for 24-48hrs.

Assuming it is/was getting good power and there aren't any problems with power itself, it sure sounds like SMC or logicboard or something.
Can't hurt to do an extended test.
The wake from sleep freeze type issue for 2008s early on was suppose to be fixed and resolved by an EFI firmware update last year (Apr/May time frame?).
I'd take it in.
Sometimes swapping parts is all that can be done to see if a component is at fault.

-3403D error when attempting Apple Hardware Test

Hi everyone,
I want to perform an Apple Hardware Test. I restarted, pressed option+D, and a globe appeared. After a minute, however, the following text appeared:
Apple.com/support
-3403D

Your Macbook Pro came with OS X 10.6.x and to run Apple Hardware Test you can use bundled with your Macbook Pro Application Disc:
Using Apple Hardware Test - Apple Support
Your Macbook Pro probably was upgraded to use OS X Internet Recovery as some of the Mac which came with 10.6.x did have that option. It seems like, some of the models might have problem to access Internet AHT:
Computers that can be upgraded to use OS X Internet Recovery - Apple Support
About the "Apple Hardware Test does not support this machine" message - Apple Support
Not sure what error -340D means but if you haven't tried yet, i would suggest to turn OFF your router and after 2-3 mins turn ON again. Try with different network as very often issues with starting Mac in Internet Recovery are caused by network settings. This could be the same issue...

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.

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

My Mid-2011 iMac with pre-installed Lion can't load AHT (Apple Hardware Test) over internet

I have a Mid-2011 iMac (3.4GHz) of which Apple's Support document for the Apple Hardware Test (http://support.apple.com/kb/ht1509) says:
Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT.
Well, this doesn't work for me. My Mac is on a DHCP-supporting router which has constant internet connection. Yet, when I turn off the Mac and then on again, holding the D key down even before the screen turns on, the Mac does indeed react to this key as it's then turning the screen on and taking another about half minute before it continues with the boot process along with showing the Mac symbol. Without the D, the Mac symbol comes up quickly.
So, it appears that the iMac is indeed trying to get AHT over the internet. Just that it doesn't succeed in it, and probably timing out after a while.
Any suggestions how to fix this?

Re
extract from kb article
PPPoE (where there is no router handling the PPPoE connection)
No
No
Captive-Networks (where you click an "Agree" button to access the Internet)
Yes
No
Proxies (where specific proxy servers must be configured in network preferences)
No
No
Certificate-based authentication / 802.1x
No
No
try check if you are in that case for your internet acces ?
could be a firewall problem too , if is possible try desable firewall ( or any internet filter )
no you can not see a wifi selection if you are wired ( using cable )
by the way D key for AHT need to be pressed AFTER start up sound , and hold at min one minute
HTH
Pierre

Mac Mini G4 A1103 Apple Hardware Test

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