growpotnick Posted March 13, 2023 Share Posted March 13, 2023 After running Big Sur and Monterey on the same system with only updates of OC and necessary adjustments to my EFI, I am now unable to shutdown the system without unplugging it. Not sure what happened but after updating Ventura to the latest iteration post install, the issue appeared. I see patches and the like but I haven't had this issue previously with my present EFI, only after installing Ventura and then updating it. Is there a simple fix or do I go back to Big Sur or Monterey?  Thanks, Michael Quote Link to comment Share on other sites More sharing options...