How to Reset the System Management Controller of an iMac

How To's, Mac

Difficulty: Easy (Learn More)

The System Management Controller or SMC can cause issues when malfunctioning. It can cause errors and or issues with power, batteries, fans, or other functions. Resetting the SMC can sometimes resolve these issues.

  1. Shut down the device.
  2. Unplug the power cord and plug it back in after 15 seconds.
  3. After plugging the power cord back in, wait 5 seconds then press the power button.
This Article Was Last Updated: May 8, 2020 @ 6:57 pm