I recently repaired my 2011 Macbook Pro. The logic board and the harddrive were replaced.
I got it back, upgraded from snow leapord to mountain lion and restored from time machine my mountain lion back up, then immediately updated the software since it was an old back up.
After that I started using it, and it started crashing. The screen glitches (Images below), and restarts. This problem goes away after I reset the PRAM, but then reoccures. It usually occurs when I have more than one application open, it started off while using Chrome. I removed chrome and started using safari and it was okay until I opened iPhoto then it immediately crashed.
Is this a software or a hardware problem? Im thinking of taking it back to Apple but it is a bit far from home.
This is what the screen looks like