I cannot get my Macbook Pro 15 inch late 2011 to shut down. When I try to shut down, it goes to a black screen but the keys are still lit and it just hangs unless I hold down the power button. I'm guessing this is why I get the cannot install updates message every morning.
What I've tried so far:
Reset NVRAM / PRAM
Reset permissions on Home Folder
Nothing has worked so far. Any ideas ?