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Model A1419 / EMC 2806 / Late 2014 or Mid 2015. 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (ID iMac15,1); EMC 2834 late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (iMac17,1) All with Retina 5K displays

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iMac 27 Late 2015 - Black Screen After HDD Replacement

Hi all,

I've replaced the hard drive and thought I had no problems until I tested the unit before reassembly, essentially I get the start up sound , fan and hdd whirling but a black screen. There are four indicator lights but only three are on. This is my first Mac upgrade so criticism is okay. Thanks.

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Since this machine was under warranty, why are you into it in the first place?

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Had to replace hard drive.

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Since this machine was under warranty, why are you replacing the hard drive and voiding your warranty?

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Try reseating the display connector, if it doesn't work, you may have damaged something in the process as you said that it is your first time, and this is a hard repair. Try plugging it into an external monitor if you have one. If you can't get it up and running try to put everything back together as original as you can and bring it into an Apple store and see what they can do as it must still be under warranty.

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I don't see any ports for an external monitor, just USB and Ethernet.

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it should have a thunderbolt port. It is a little square-almost trapezoid that has a lightning bolt near it.

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Okay, I see the thunderbolt port, now I have to get a cable that goes to HDMI. Question: what do you suggest I do if there is output to the external monitor?

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If you have another Monitor you can connect with thunderbolt - mini Displaybort to VGA or DVI Adapter. You can order them from Apple online store

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try to restore it to factory conditions (minus the problem) and take it to an apple store of an ASP and play dumb.

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StaceyK sera éternellement reconnaissant.
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