Grey screen problems - the spinning beachball strikes again
Long story short, I have Macbook Pro mid 2012, Mountain Lion and it keeps crashing. I restore via Time Machine but invariably it'll freeze when I'm booted up and when I have to force-quit I get the spinning cogwheel when I restart. I've tried all the 'stuck on grey screen' suggestions but nothing's working. Also my Time Machine (an external hard drive) seems to be having problems as well - it sticks on 94mb backed up out of a few gb. All help gratefully received