So I went to update my iPhone just now and my laptop wasn't plugged into the charger. (It had a full charge however) After about 3 minutes of use the screen flickered to a dark gray/black screen then shut off. I could not turn the MBP back on until it was plugged back into the charger and when I started it back up something even more odd then the screen flicker happened. It loaded up as usual but when the finder bar loaded on top of my screen only the icon segment on the right hand side loaded up.... then it started to flicker as well. The finder icon in the dock kept on loading then quiting itself it seemed over and over until I restarted the laptop. What just happened? Any clues?