Apple Hardware Test doesn't start iMac late 2009

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Level 1

5 points

Apple Hardware Test doesn't start iMac late 2009

Hi everyone, I can't use the Apple Hardware Test on a iMac 27'' late 2009 with El Capitan installed. I don't have the original disk with the OS, even if I don't think it's needed because, following the Apple instructions Apple Diagnostic is built into Mac. ( OS X El Capitan: Use Apple Diagnostics or Apple Hardware Test) I've tried with and without ethernet cable, but it doesn't show anything when I turn on the Mac. Can someone please tell me what do I have to do, to make Apple Diagnostic or Apple Hardware Test work on my Mac, thanks.

iMac, OS X El Capitan (10.11.1), Apple Hardware Test

Posted on Oct 23, 2015 1:21 AM

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Answer 1

Best reply

SeaPapp

Level 7

26,486 points

Oct 23, 2015 3:42 AM in response to Lorenzinho90

The Apple Hardware Test is on disc 2 of your original gray install set, it is NOT built into El Capitan. Since you no longer have your install discs you can see if your version of AHT is listed for download here https://github.com/upekkha/AppleHardwareTest

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Answer 2

Lorenzinho90 Author

Level 1

5 points

Oct 23, 2015 6:45 AM in response to SeaPapp

Thanks for your help, fortunately i've found the disc 2, but it doesn't work anyway. I don't understand if I'm doing something wrong or what. I've insert the disc when Mac was on, then restart the Mac holding the D key for the entire process but nothing happens. What am i doing wrong?

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Answer 3

Lorenzinho90 Author

Level 1

5 points

Oct 23, 2015 7:01 AM in response to Lorenzinho90

It seems that the Mac doesn't read Disc 2, because: when the Mac is on after a few seconds it ejects the disc and even during the restart process, after a few seconds while i'm holding the D key it ejects the disc...

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Answer 4

yanny

Level 1

5 points

Nov 4, 2015 9:01 AM in response to Lorenzinho90

Same problem for me on a mid-2010 27' iMac (11.3) running El Capitan.

I wanted to check issue I have with firewire so started with disc 2 that came with my mac. Holding "D" does not do anything. Just reboot to El Capitan.

Any idea?

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Answer 5

GeorgeHB

Level 1

9 points

Apr 2, 2016 9:37 PM in response to Lorenzinho90

I have a mid-2009 20" imac, and cannot get it to run the hardware test software. I've tried inserting the original #2 disc that came with the computer, and restarting while holding down the D key, but all it does is go to a grey screen, then the display flickers a couple times before going solid black. If anybody can help, I'd be very grateful.

George

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