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Imac Shuts down randomly

Where to begin. have a 2 yr old iMac 27" 3.6 Ghz - 8 core Intel i9/ Memory 64 GB. Updated to Big Sur. During installation it went to black and did not come back on until it was unplugged and restarted. Afterwards everytime we went to random file folders it would just shutdown. And only way to restart was to unplug from wall first. Brought it to Apple Store to diagnose and after a week it came back with no issues found. So we completely reinstalled everything fresh - did not use migration / time machine in case it kept copying over the issue (corrupt file or something). Worked fine for 2 weeks and now it has crashed 6 times today. We're just holding the space bar to preview a file - so not a heavy operational lift at all and then crash! And then again on restart and just logging in it crashed.

Not sure what to do now! Any suggestions?

iMac 27″, macOS 10.13

Posted on Oct 18, 2021 1:31 PM

Top-ranking reply

rkaufmann87

Level 10

143,886 points

Posted on Oct 18, 2021 1:32 PM

Please navigate to www.Etrecheck.com and download the free version of EtreCheck. Once you have you downloaded the app and installed it, please run the report and save it. This report will help us get a good idea what has been installed on your system and help us be able to diagnose what may be wrong.

When you have your report, you can attach it when you reply to this message and we can then review it and help you determine what is needed to get your system running well again.

For instructions on how to download your EtreCheck report and attach it to your reply to this message please click https://discussions.apple.com/docs/DOC-250000211

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Imac Shuts down randomly

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