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JLinnier

macrumors newbie
Original poster
My 2019 iMac (specs below) has been "instant-black-screen-crashing" for a couple months now.

2019 - 27-inch iMac with Retina 5K display
3.0GHz 6-core 8th-generation Intel Core i5 processor, Turbo Boost up to 4.1GHz
24GB 2666MHz DDR4 memory
Radeon Pro 570X with 4GB of GDDR5 memory
1TB SSD storage

I have attached the latest Error report from this past Saturday, February 14th. Pretty sure at the time I only had a Zoom video meeting going and Chrome open. I do not utilize any anti-virus apps, third-party apps, play games, audio/video editing apps, or Adobe apps very often.

My trouble-shooting steps taken (apologies, it's been 2 months so this wasn't the exact order):

-Reset SMC and NVRAM
-Tried every configuration of RAM swap
-Selected "Prevent automatic sleeping when display is off"
-Selected "Never" for "Put Hard Disks to sleep when possible"
-Selected "Never" for "Wake for network access"
-Turned off screensaver
-Removed all peripherals one by one (no hubs/adapters are being used)
-Booted into Safe mode
-Setup and tested using a new user account
-Ran Apple Diagnostics
-Totally wiped drive and tested a clean OS reinstall
-Tried to run it from bootable external drive to no avail
-Drank heavily and wiped many tears (that seemed to help a bit)

Assume my iMac is coming to the end of its life. Thinking it's gotta be a failing hardware (GPU/Graphics) issue. AppleCare is long expired. So before turning it into an external monitor via controller board, I'm willing to try anything else since buying a new one is not an option due to an income loss from losing my job.

Two months of struggles is getting quite frustrating so any help is appreciated.

Thank you so much for reading through this and for potentially being able to help me out.
 

Attachments

If all your troubleshooting still individually incurred "instant-black-screen-crashing", than most likely failing GPU.
 
If all your troubleshooting still individually incurred "instant-black-screen-crashing", than most likely failing GPU.
Thanks @Bigwaff. Figure that is the main culprit.

Posted here as a last ditch effort to see if I might be missing a different troubleshooting step I could try.
 
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