Hello - please can someone help. I have tried everything and am at my wits end
I installed El Capitan public beta version on my 2014 MacBook Pro retina. Had no issues really until version 4 update on Tuesday. Then all the problems started
It never completed / finished the installation of the update. I had to eventually format drive and reinstall El Capitan again from a bootable flash installer
Have tried 4 times again with no success and had to keep repeating the process from beginning to end.
I am beginning to believe this is a hardware issue that is somehow suddenly becoming apparent with the update. Any help will be so appreciated