SOLVED: iMac shuts off at random - iMac G5 17" Model A1058 - iFixit
desktop application - What is the purpose of the 60-second shutdown timer in macOS? - User Experience Stack Exchange
What to Do When your Mac Keeps Shutting Down - YouTube
iMac 27" 5K 2020 shuts down randomly, Lightburn in error message - OS Specific - LightBurn Software Forum
Why is my iMac randomly shutting down? How can I fix it? - Quora
My 2006 iMac I fixed after the ram, hardrive and graphics all had problems. One problem is that cause it has 2gb ram it shuts down the computer if I do anything
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2020 iMac Screen Glitch on Shutdown - Apple Community
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2012 iMac spontaneously shuts down on startup. : r/mac
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Mac/MacBook/iMac Keeps Shutting Down (Why & How to Fix)
Imac shuts down while loading os. Faulty hard drive repair - YouTube
What To Do If Your Mac or MacBook Won't Shut Down | Macworld
SOLVED: Apple STUMPED - iMac shuts off randomly, daily to multiple times/hour - iMac Intel 27" EMC 2546 - iFixit
Late 2013 27 IMAC will not restart or shutdown | MacRumors Forums