I got vertical lines and screen split with space on MacBook Pro 2011
I got vertical lines and my screen splits sometimes. It happens when i use more applications simultaneously or sometimes only when i open just one application. I tried changing RAM memory but same happened. Tried with external monitor and it happens on my macbook, external monitor is ok though.
It also reboots by self, and sometimes i have to shut down and it takes time to get into OS and function normally.