Apple Hardware Test detected an error code... now what?

I ran AHT and I got this message:
Alert! Apple Hardware Test has detected an error
4M0T/1/40000003:HDD-1424
Can anyone shed some light on this?
My early 2008 iMac has been having issues with the spinning wheel when opening and using applications. I can't seem to pinpoint when it happens, but many times I will have to shut down or power the machine off to stop the wheel of death from spinning.
Any help would be greatly appreciated.

bump... any one else?
I was able to boot the machine up today and I am noticing the top of the machine is getting very hot. Could this be the overheating issue I have read about here in discussions?
I was also able to transfer files to an old eMac, so I am backed up, but that transfer slowed after the machine warmed up. I would shut the iMac down and let it cool... it then transfered great while cool but slowed when it heated up....
I am taking it in to a local authorized repair shop Monday morning..... just hoping for some more thoughts before then.
Thanks!

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Apple hardware test detected an error.

Well, I'm back (see older post) . Just ran Apple hardware test and it says it detected an error. What should I do from here??
I using the original Tiger discs which came with the computer. The Leopard disk was just a drop-in CPU disc they gave me to upgrade from (when I purchased the iMac in 07). Can I just use the Tiger disc again to run Disk Utility and try to fix the HD?
Nancy

Attempted to repair disk via the Disk Utility on the Tiger disc.
Now receive new messages:
under Verify & Repair Macintosh HD:
Error: The underlying task reported failure on exit.
uner 1 non HFS volume checked:
1 volume could not be repaired because of an error.
I think I'm toast. Can anyone tell me what to do at this point?
Thanks,
Nany

Apple Hardware Test detected following error: 4ROM/2/40000008: 0x84a18698

My laptop doesn't wake up at times, doesn't power on.
Once it powers on, then no issues is found.
However, after turning off, difficult to power on.

I am using
Mac OS X Snow Leopard (version 10.6) actually. mistakenly selected OS 9

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ran hardware test and found error code 4SNS/1/40000001:YPOR-0.592 ? can't find the signification of this error code.

Back atcha!

Con apple hardware test rilevo questo errore nella memoria 2MEM/1/4 DIMM1/J4001/1/ e qualche altra volta 2MEM/104/4 DIMM1/J4001 ritengo siano problemi ad una delle memorie ram aggiuntive. che debbo fare ? è da sostituire? o c'è un modo di escludere l

con apple hardware test nel mio IMAC G5, rilevo questo errore nella memoria 2MEM/1/4 DIMM1/J4001/1/ e qualche altra volta 2MEM/104/4 DIMM1/J4001 ritengo siano problemi ad una delle memorie ram aggiuntive. che debbo fare ? è da sostituire? o c'è un modo di escludere il o i banchi di memoria interessati?

Hardware Test: Video Ram "error code 2NVD/1/4:119" G5 2.7 NVIDIA 6800 Ultra

Wondering if anyone has experienced this . . .
My G5 started displaying rows of chevron shaped artifacts a few weeks after upgrading to Leopard, Bought a used replacent card and it seemed to fix the problem for a couple of weeks then too started displaying the artifacts, ran the Hardware Test on both cards and both had Video Ram error code 2NVD/1/4:2119
I'am reluctant to buy yet another card untill I'am sure its not a Leopard Issue. any ideas?

I need to do more troubleshooting of my problem before I trying to reflash I think . . .
the other day I had a friend install both my original card and the newly purchased "used" card in his G5 and he also got the error codes on both of them. Brought them home installed the replacement card reset the SMU and PRAM as I've done many times before and got the G5 up and running (after several reboots) no artifacts seemed to run perfectly for a couple of hours anyway when I tried restarting and then the problems returned, gets to the grey screen with the rows of artifacts then stops, screen goes black then the fans start slowly spooling up to max RPM (most likley from a kernel panic) logs show;
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Apple hardware test gives me this code: 4SNS/1/1C0000008:TN1D--124

4SNS/1/1C0000008:TN1D--124
this is the code i get . I runned the test because my laptop is a macbook pro 13 2.4ghz mid 2010 with mac os x 10.6 and it is getting a reurrent problem that is that the fan starts to go faster than usual after 1 minute of starting up the laptop and the cpu load gets up to 99% of usage and the system becomes slow like the lag becomes extreme.
The laptop suffered a waterspill like 3 months ago but I got it fixed only that the battery is no longuer working , not even a new one i bought. Also a memory slot died and the microphone isnt working even if its new. I also got the dc in board replaced but the one i got was a 2008 model but seemd to be workign fine until last new years eve when it got back to the lag.
Can you tell me if its a faulty temperature sensor on the logic board that causes the fan to accelerate or as a laptop repair guy told me it is the hard drive. Could it be the hard drive? Would i get a hard drive kind of error if it was that? i doubt its the hard drive. the guy wanted to sell me a new hard drive so maybe he new what the problem is and wanted to make me think its he hard drive so i buy a new one from him.
If its some temp sensor then I dont get why i get a normal temperature reading using a program i got that measures it , it marks 38 Celsius, which seems normal temp to me.
Also the laptop is receiving 16.6 v at the dc in pin connectors after i checked it with a voltimeter.
So, what do you think the problem really comes from? Can it be repaired?
thank you

Hi eww thank you for answering.
I have installed Istat pro and all temperature sensors measure ok ( Celsius )
HD 30
CPU 36
Heatsink B :34
NorthBridge: 29
Are there anyother sensors.
4SNS/1/1C0000008:TN1D--124
This message indicates the sensor that is wrong? I have no apple care. Where can i get someone tell me which sensor is wrong? I live in a small city ( Ensenada )north of mexico and there are no oficial apple repair specialists around here!
Thank you !

What does Apple Hardware Test error code 4MEM/1/40000000:OX3bb6b190 mean?

Mozilla kept crashing so I did the Apple Hardware Test and got error code 4MEM/1/40000000:OX3bb6b190. I reinstalled MacOs 10.4.4 (after saving the important stuff to disk of course) and it took about 10 tries to get the 2 disks installed. After the installation, I tried to update to 10.4.5, and when I restarted, the screen was blank. The only disk the computer will start with now is the No. 1 installation disk. What can I do?

Hi
A MEM error code generally indicates a faulty RAM Module. In my experience most RAM manufacturers offer at least a 5 year warranty of their RAM products. Some warranties are for 10 years. Sometimes reseating (taking it out and putting it back in again - properly) the Module will 'cure' the problem. Run AHT afterwards if you try this option first.
If you can remove the offending module and still have enough RAM to be able to do what you need to do then do so.
If not take it to your nearest Apple Repair Specialist who should fix it for you or replace the faulty module yourself and deal with the RAM manufacturer directly.
Judging by the footer to your post you don't seem to have had much luck with this model have you?
Tony

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Since yesterday My DP1.8 G5's fans are max speed like jet engine. I tried PMU resets , Disk warrior. But nothing helps. The Apple Hardware Test gave me error code of "post/192/0" . Do you guys know what does this error code mean?
Thank you.

Hi-
Welcome to Discussions!
I think thast the error is related to the "Power On Self Test", or POST. When you start the machine, are there any beeps, or power button LED flashes? If there is a POST error at startup, the power LED would flash in cadence with the beeps..
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
Do you have any new RAM installed?

Where do I find a list of error meanings for Apple Hardware Test?

I think My 27" mid 2011 iMac has a faulty thermostat on the ODD. I ran the Apple Hardware Test and the error message was 4M0T/4/40000002:ODD-0. Where can I learn what this error code actually means?

That error message means that there is a problem with the optical drive fan motor. I recommend you to make a backup of your files and take the Mac to an Apple Store or reseller in order to prevent any problem.
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I no longer have the software disk (OS10.5) that came with my MBP in July 2009. I only have the $10 Snow Leopard disk from Apple, which does NOT seem to contain any Apple Hardware Test (AHT). I have tried starting while holding d or option keys to no avail. Does neither my laptop nor OS 10.6 install disk have AHT? If not, can the appropriate AHT be obtained? My wife has an older MacBook & her original 10.5 install disk, but it will not launch AHT in my MBP. Any suggestions?
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I like the advice to contact Apple and simplky pay for a new AHT. I did that, giving them the serial number of my MBP and indicating it was a June 2009 model, 2.66 gHz Core 2. However .....
I received yet another Apple FedEx shipmet with yet another different Mac OS X Leopard install DVD; this makes three in all!! Just as with the 1st DVD, these two will NOT mount on my desktop, are NOT seen by Disk Utility (or by Drive Genius) and cannot boot my MBP laptop in either of 4 different modes: (1) start-up with "d" (2) start-up with "option d" (3) start-up with "option" (4) start-up with "c". Apparently none of the disks I received have Apple Hardware Test on them, although that is what I paid for in early December. It may be that the last two disks really do have Mac OS X Leopard on them, but because I am now running OS 10.7.5 (purchased from App store with no AHT), the disks cannot be seen by my laptop.
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Apple Hardware Test detected an error code... now what?

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