get stuck on the screen saver interface
My notebook is macbook pro retina 15`,operate system is Os X MountainLion.When preview and change the screen saver,or input the user code on the screen saver interface,the OS always get stuck,I can't go back to the desktop,and the mac is dead. I have to power off my Macbook.It has been about 8 times since 2 months ago.I hope Technical staff can help me with this problem.
MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.2)