Home > Questions

iMac keeps restarting (com.apple.perfpowerservices exited abnormally)

My work iMac (late 2014, 27-inch, retina 5k) has rebooted several times when I was using Adobe XD along with multiple Chrome tabs open. I believe it's a kernel panic and have gone through all the troubleshooting tips from Apple without success. When booting up, it gets stuck at login. In Single User Mode, I see lines of errors, including (com.apple.PerfPowerServices.xxx) : Service exited with abnormal code:1.

Best Answered by

iBoysoft author Jenny Zeng

Jenny Zeng

Answered on Wednesday, November 26, 2025

com.apple.PerfPowerServices is a component or service provided by Apple that is related to power management and performance monitoring on Apple devices. So I believe the cause of your iMac restarting is due to power-related issues.

Try resetting SMC (System Management Controller) to resolve problems relevant to power management, battery charging, and other hardware functions after unplugging unnecessary peripherals. If it doesn't work, format your Mac and reinstall macOS.

Remember to back up your Mac if you decide to do a fresh install, as formatting will remove all data on your Mac. If you can't log into your Mac, use data recovery in Recovery Mode to restore the files.

 

 

 

People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

How to Fix File Is Too Large for the Volumes Format

How to Fix File Is Too Large for the Volume’s Format [Windows & Mac]

If you encounter 'The item can’t be copied because it is too large for the volume’s format' message when saving files to your USB, read this post to know how to fix too large for the volume's format.

macos ventura system settings

System Settings: The Redesigned App in macOS Ventura

This post talks about the revamped System Settings app on macOS Ventura, once System Preferences on macOS Monterey and earlier, including the new design, relocated settings, and some problems.