MacBook Pro starts up then shuts down.
This morning I was doing a software update and it had to restart. It now starts up, chimes, shows the logo, shows the spinning wheel, and the bar loads a little bit, and then shuts down. I have done it repeatedly and it does the same thing. I have had this computer for less than a year. I am not too sure what to do now! Any help is appreciated.
MacBook Pro, Mac OS X (10.7.1)