unexpected shutdown

I put my iMac to sleep but when i come back later the iMac has shutdown and i get a notice that the shutdown was not done properly.

iMac 27", macOS 10.15

Posted on Dec 1, 2019 6:07 AM

Similar questions

Unexpected Shutdown iMac 19.1. MacOS 13.3.1. Unexpected shutdown often when selecting sleep. Could it be software problem?
647 3
iMac not shutting down I imagine I'm having problems with shutting down because my iMac is late 2013 hence vintage and I cannot upgrade past Catalina. However, the computer is in perfect order in all other ways, and fast! I have tried closing all apps before I close down but it makes no difference. I have to use the power button most nights. The machine recently had a complete cleanse and reinstall of Catalina and, as I said, works like a new machine except for this. I am very tidy with my computer. If there is no fix, would it be best to leave the computer on all the time, letting it go into sleep mode overnight?
1131 9
iMac shutting itself down from sleep mode My iMac, late 2013, running Mojave 10.14.4, has started shutting itself down when I put it in sleep mode. When I power it back up, it says "You shut your computer down because of a problem" which is not the case. Can anyone help? Thank
753 2

1 reply

John Galt

Level 10

154,108 points

Dec 1, 2019 6:09 AM in response to arisce

An SMC Reset is justified for that problem.

Excerpt:

These symptoms might mean that an SMC reset is necessary:

...
Your Mac sleeps or shuts down unexpectedly ...

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

unexpected shutdown

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple Account.

Learn more Sign up