iMac turns off randomly

Boreyes95 Said:

"iMac turns off randomly: My 27-inch, 2017 IMac randomly turns off and doesn't turn back on unless I unplug it from the outlet. Any ideas that is causing this issue or what I can do to fix it?"

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I. Reset the SMC and your NVRAM:

What it could be is the power management settings. Sometimes when changes are made to the system(i.e. updates), system configurations (i.e. for Power and for Ports) become manipulated, technically. So, reset the SMC and NVRAM. Your power adapter may not be being seen promptly by the ports, or your battery may not be charging affectively. By reseting these, all of the ports would be configured to how they should be.

II. Perform this Reset Thrice:

Note that you may need to perform each thrice. This can be time consuming, to be certain you have the time to do so.

III. References on Power Issues:

• If your Mac doesn't Turn on - Apple Support
• If your Mac doesn't Turn on or Start Up - Apple Support
• Turn on (Start Up) your Mac - Apple Support

Boreyes95 Said:

"iMac turns off randomly: My 27-inch, 2017 IMac randomly turns off and doesn't turn back on unless I unplug it from the outlet. Any ideas that is causing this issue or what I can do to fix it?"

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Uninstall Security Software:

• Any Security Software Installed?:

If you have any Security Software installed, then uninstall it. It may be putting your Mac to sleep or make it overheat, being that it is constantly running in the background.

• Where to Get the Uninstaller:

Get the Uninstaller from none other than the Developer. Getting it elsewhere may result in malware or spyware being installed. Security Software just gets in the way on a Mac, and this is a pure example of how and why. Contact the Developer to find out which is the correct uninstaller to use, and ask how to successfully, fully uninstall it.

• Source:

View this Posts Solution: My iMac keeps crashing! Catalina 10.15.5 - Apple Support