system freeze

  1. G

    El Capitan 10.11.6 system freeze!

    My late 2013, 27" iMac is completely up to date with software, but keeps randomly having complete system wide freezes (yes, usually when Safari is open). Today it froze, I crashed it and rebooted, but it's still frozen. I tried rebooting in safe mode. Nothing. Last time this happened I found...