Fans blaring and Black screen After upgrading HDD

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iMac Intel 27" Retina 5K Display 2019

A2115 / 2019 / Processors from 3.0 GHz 6-core i5, up to 3.6 GHz 8-core i9. Released March 19, 2019.

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ChrisM @chrism56542

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Posted: Sep 21, 2023

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Fans blaring and Black screen After upgrading HDD

Hello, I just upgraded my internal Micro Blade SSD with a 2TB OWC Acura Pro SSD. I also added an internal HDD, and upgraded the RAM. Once I had everything put back together and sealed up the computer won’t boot past a black screen. You can hear the chime but nothing but a totally black screen. Also the fans come on full speed. I installed the HDD thermal sensor that OWC provided with the hard drive. Any ideas what might be the problem?? Please advise

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Dan @danj Rep: 480.2k Self employed contract worker 35 330 971 · Answer 1 · 2023-09-22T03:50:52-07:00

Dan @danj

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Posted: Sep 22, 2023

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Well with so much change without cross checking after each change makes diagnosing the problem very hard.

You’ll need to undo some of the changes you did. I would start off reverting the RAM as it’s the easiest. Take our the new RAM and put back the original RAM. Next put back the original drive.

Put it’s also possible you damaged the display or it’s cables! If this was the first time working on a Mac and didn’t follow our guide and use the correct tool it’s not uncommon. This could be an expensive repair!

iMac Intel 27" Retina 5K Display 2019 Display Replacement

Until you know the system is working hold off remounting the display and make sure you use the correct tapes!

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