-3403D error

To use the internet for the apple hardware test, your Mac had to ship with at least Lion. Otherwise you have to have the install dvd that came with the Mac. Not a retail version, but the machine specific software. https://support.apple.com/en-us/HT201257

Try booting the MBP with the OPTION+D keys. It may work.

If you had the original install DVDs, you would not have this problem. Duplicates can be obtained from Apple Customer service.

Ciao.

To all that get that code. It means your Mac cannot do the hardware test from the internet. You need the install disk that has the hardware test on it. Then you boot it and hold down D or Command D at startup.

Doesn't work. That's where the error message comes from. Pressing D only works if you have the install DVD in the drive, Option + D loads Internet Recovery and is supposed to work as long as you're connected to a network. Using this option is what's causing said error message.

While this may be true, it is odd that the machine appears to attempt to load the hardware test (it goes through all the correct motions before bringing us to the -3404D error). Further, why not simply give a message like, "Sorry, hardware test via the internet is not supported on this Mac," rather than some unhelpful, cryptic message?

Finally, determining if your computer supports loading Apple Hardware Diagnostics over the internet isn't necessarily easy to do using the info from Apple. Quoted from their webpage, "Some Macintosh computers that shipped with OS X Lion and later 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."

Some? How helpful is that? Why don't we throw in "may" and "possibly" and how about "we don't really know" for good measure.

I have an early 2011 MBP 13 that does do the AHT over the internet, and a Mid 2010 that doesn't, so for the 13s that appears to be the cutoff. How hard was that, Apple? FFS

Created bootable El Capitan USB / Installed fresh version of El Capitan / Restored data with Time Machine / Voila

Same here. MacBook Pro mid-2010. Having problems since Yosemite install a month or two ago. Nothing happens when I try to boot holding down the d key. The system just sits until I release the d key, at which time it reboots in normal mode. Option-d causes the error everyone else is getting here.

my ginger's solution is what worked for me. I can't do internet recovery on my mac--it's a bit too old. I used the dvd that came with the mac and that worked fine. Showed no hardware errors, but worked. The overall problem I was having was with the video card. Got that replaced and I'm back in business.

This is straight from someone at Apple, "That -3403D code actually means there was an issue with your Mac software configuration"

MY MBP was working very well with yosemite (mid 2010 build) until it 'updated' last week. Now I can't even use it without it crashing!! I'm so annoyed. I get the impression that the newer the software & the older the machine, the less likely these two will cooperate together! Are there any clever techies out there who can help diagnose the problem before I wipe the hard drive & re-install from a back up? I'm only glad I have an iPad to use while I'm stuck with this problem! 😠

I first also had trouble. Funny thing was that with the power connected the led in the connector near the laptop was not green or range but not doing anything. Then I disconnected the connector to the white square block (with power still connected) and the led was again green. Very strange! Then the laptop booted and I could do the restore process (Created bootable El Capitan USB / Installed fresh version of El Capitan / Restored data with Time Machine ).

Hi,

I'm having exactly the same issue with a late 2010 27 inch iMac right now.

EFI firmware is up to to date.

Any clues?

Thanks!

Having the same exact issue!

Same thing, 2 days without a solution !! grrr

Same thing, mid-2010 Macbook Pro I just upgraded to Yosemite yesterday. Everything else seems to work fine but I need to do a hardware test and can't.