iMac 12,2 cannot run hardware test

[pcrosbyak]

10.10.5, i7 3.4 Ghz, 8 M RAM mid 2011 model purchased reconditioned from Apple Nov 2012.
Cannot run hardware test: "d" at startup brings up normal screen, "option d" does start Internet Recovery which stops with an overlay exclamation point sign and: apple.co/support -6003D.
I am not adept with software and need help!

 

[DeltaMac]

The internet recovery diagnostic test needs a working internet connection.
The error screen "apple.com/support -6003D" is usually also related to a problem with your internet connection.
Make sure that your internet is supported on this page.

I would suggest that you may need to connect through ethernet (not wireless), and use a wired USB keyboard to try the internet recovery and diagnostics.

Did your iMac come with the installer DVDs (it originally came with OS X 10.6 Snow Leopard)?
The internet boot to Diagnostics probably doesn't work on your iMac, and you can boot to the hardware test on the DVD disk 2. Same shortcut key, restart with the Applications Install Disc 2 in the drive, while holding the D key. (and no internet needed...)

 

[pcrosbyak]

Thank you for the response. I was connected by ethernet and have had no problem with any other sites/servers. I was using the bluetooth keyboard - but it did initiate the Internet Recovery process. I did not receive any discs from Apple with the unit and I do not remember what IOS it had installed when it arrived. From research on this problem I understand that the hardware test was supposed to be installed on this model and no discs was the norm.
I can plug in a keyboard and try that, but I will be very surprised it it makes a difference. That said, I have been surprised before!
[doublepost=1453615089][/doublepost]Plugged in old Windows keyboard. Tried both "d" and "option d" and both just resulted in the start window coming up. Going back to the bluetooth keyboard to do option d again and see if that still starts the Internet Recovery.

 

[DeltaMac]

I think you may just be missing the internet boot.
When you try the Windows keyboard, are you using alt-D?
The timing that almost always works is to do a PRAM reset...
Restart while holding Option-Command-P and R.
You should hear the boot chime. Continue holding the same 4 keys until you hear the boot chime 2 more times.
When you hear that third chime, release all keys, and immediately hold Option-D
You SHOULD see the rotating globe, showing that your Mac is booting to Apple's servers, where the diagnostics will run.
Do you ever see the rotating globe - as on this page? That can take several minutes to completely boot.

If you are still getting the internet boot icon, but it always stops at the "apple.com/support" with an error code - is it always that same code -6003D?
I cannot find any list of those codes, or any real help with deciding what to do to troubleshoot those errors.
I DO see that when it has one of those boot errors - it is usually a networking error of some kind.
Be sure that you have disconnected any external drives, including all USB devices or hubs. (ONLY power, keyboard/mouse, and network connection.
Do you have another network (different router) that you could try as a test? Maybe even take your iMac to a friend's house.

Finally - are you just curious to try the hardware test - or are you having an actual problem with hardware?