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slawenda

macrumors Chihuahua
Original poster
Mar 30, 2025
1
0
Hi everyone, I have a base model 2017 27” 5K iMac, with an SSD and 40 GB of RAM (most of which I added). I’m having an issue lately where every day or two, for the last two or three weeks, while my iMac is sleeping, it has a kernel panic and restarts itself, taking me back to the startup login screen. When I log in, I receive the same error message: “the computer restarted because of a problem.” I’ve tried resetting the PRAM, the SMC, and I’ve tried reinstalling MacOS. I ran the Mac hardware diagnostic test and it didn’t show any problems. Nothing seems to have helped. I’ve also tried to boot into safe mode, however when I do that, my login screen flashes in and out to a black screen, preventing me from logging in. I’ve done some research online and it seems I could have a failing GPU? I’m thinking of calling it quits and getting a new Mac Mini, although I love my iMac and it still otherwise serves me very well. Does anyone have any other suggestions? Should I try a clean reinstall? I’m on Mac OS Ventura. Thanks in advance!
 
What's connected to it?
Kernel panics are usually something related to hardware (could be an external device).

I'd also suspect the 3rd-party RAM.
TAKE OUT the 3rd party RAM and replace it with the factory RAM.
Go like that for 2-3 days.
Do the crashes disappear?
 
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