Macbook Pro won't boot up after interrupted mountain lion update
I was completing a mountain lion update which I believe I interrupted. Now when I try to boot up my Macbook Pro all I get is a grey screen with the apple logo and a loading bar. Once the bar gets 1/3 full the computer then shuts down. Ihave tried holding down the shift and power up key and tried holding command, option p and R while powering up but no change. Any ideas please?
MacBook Pro (15-inch Late 2011)