Hi All,
Same problem here, I get through to the login page put in my login and password and the computer screen goes to black.
I can tell the computer is running as I can turn volume up and down, it just seems the screen wont make the transition to the operating screen.
So, I then hold down the power button until it shuts down and reset the PRAM, Command+alt+P+R for three reboots and then let it go and it starts normally.
This feels like a software issue, I have a 2.7 GHz Intel Core i7 with 16 gig of RAM and a Retina display and Flash Hard drive running system 10.8
Now this does not happen all the time, not sure yet what the different scenarios are. im runing the screen under "More Space" rather than the Retina.
Any news would be appreciated as this is my main work machine, and losing it will cause me so much hassel. ( What really ***** is I just wiped my old MacBook Pro which I kept for a week and low and behold a few hours later this problem occured. )
Lets hope Apple find a solution quickly and it is simply a software issue.
Rick OZ