I'm using Maya 2014 on my 13" MacBook Pro core i5 2011. When I'm entering the viewport 2.0 render engine the upper 2/3 of my screen (see picture attached) immediately gets scrambled showing weirded lines forcing me to restart the computer by pressing on the power button. I was looking and asking for this question on other Maya forums but with no response. So if anyone can please, please help me, it would be greatly appreciated. Thanks very much in advance.