My 2017 27'' iMac often reboots unexpectedly. I have reinstalled the OS and kept my Apps in the latest version, but it won't help. I also ran the diagnostic test, it said no issue was found.
I contacted apple support several times, but can't find the root cause either. Is there anyone who has a similar issue and how to fix it? Thanks.
iMac 27″ 5K, macOS 12.5
Welcome! That is a kernel panic and can happen for a number of causes, both hardware and software. The most common cause is incorrrect or cheap RAM. Have you added RAM to your computer since purchasing it?
See: If your Mac restarted because of a problem - Apple Support
Even if the RAM is fully compatible, the modules may not be seated properly. Full seating requires a rather strong push.
Most long-serving contributors here recommend either Crucial or Other World Computing RAM. Many of the other brands push a "value line" product that fails to meet the Mac's strict requiment and that makes kernel panics. My 2017 iMac 5K has the two modules Apple installed at the factory, plus two that I bought from OWC. It has never panicked
Welcome! That is a kernel panic and can happen for a number of causes, both hardware and software. The most common cause is incorrrect or cheap RAM. Have you added RAM to your computer since purchasing it?
See: If your Mac restarted because of a problem - Apple Support
Even if the RAM is fully compatible, the modules may not be seated properly. Full seating requires a rather strong push.
Most long-serving contributors here recommend either Crucial or Other World Computing RAM. Many of the other brands push a "value line" product that fails to meet the Mac's strict requiment and that makes kernel panics. My 2017 iMac 5K has the two modules Apple installed at the factory, plus two that I bought from OWC. It has never panicked
Thanks for your reply. I do install a 16G RAM in the iMac. But I have used it for years, and iMac only prompts a problem recently.
I plan to unplug the RAM and downgrade the OS. Hope it will fix the issue.
"Your computer was restarted becasue of a problem", but what's the problem and how to fix it
