GRAPHICS AND CRASHING IMAC MID 2011
After installing Yosemite i keep getting flashing on my screen then it goes blank. When i restart my computer..doing a hard reboot. it then looks as if it is installing something and then i get a message that there was a graphics failure! anyone else getting this? I have never installed any other graphics cards or any
Apple TV, OS X Mavericks (10.9.2)