Q: After installing 10.11, Mac won't Restart or Shut down
I installed OS X 10.11 on a SSD, and although it took a while to update from 10.10.5, when I try to reboot the Mac Pro (black), everything but the desktop pic disappears, and the Mac won't restart or shut-down. It hangs. The only available feature is the Dock and the only way around it is by pressing the Power button for 5 seconds to turn it off and pressing it again to turn it on.
I know a lot of people are having issue's. Any thoughts as to why this occurring?
Thanks!
Posted on Oct 12, 2015 1:34 AM
Sorry my answer is not at all techy, but it may help. I had some issues with shutting down and restarting too. The top menu bar would disappear and the system would just hang up forever even though I was still able to move my mouse. I noticed that if I did a hard shut down with the power button then booted back up without opening any programs I was then able to shut down immediately, but the second I ran any software that used audio then I had problems shutting down. Also I noted the problem was not occurring when I booted up in safe mode and then shut down as all my media drivers were disabled. I narrowed the problem down to an out of date audio driver that was lingering around on my computer since Mavericks. I got rid of the driver/s and the associated software (which I was not using and was now also incompatible) and now El Capitan works like a charm *knock on wood*.
I would suggest going through your applications folder and checking the compatibility of all your 3rd party programs (especially the ones you don't use) via the product websites and uninstalling or trashing them if they are not listed as supported by El Capitan, along with their associated drivers. Sorry I know it's a very simplistic suggestion, but this worked for me, may work for you as well. Good luck.
Posted on Oct 28, 2015 6:52 AM