2017 iMac with macOS Ventura 13.7.6 is slow, fan on max and kernel_task consuming 540% of CPU
Did Software Update from Monterey to Ventura about 2 months ago. Now on v13.7.6.
Fan constantly running full speed, everything very slow including keyboard input, no apps open except Finder and Activity Monitor which shows 525%-565% CPU for the Process Name: kernel_task. Everything else shows low single digits, most of which are 0%. How to fix this?
Actions to date:
- Restart - same outcome
- Shut down, wait 2 minutes, Start up - same outcome
- Run “D” diagnostics - shows PFM006 (SMC issue)
- Reset SMC (shut down, pulled plug, left for 15 seconds, plugged in, waited 5 seconds, started up - same outcome
Any help appreciated.
[Re-Titled by Moderator]
Original Title: Help please: 2017 iMac with Ventura 13.7.6 - slow, fan on max, kernel_task consuming 540% of CPU
iMac 27″ 5K, macOS 13.7
