MacBook Pro Retina Mid 2012 15-inch i7

MacBook Pro Retina Mid 2012 model. It features a 2.3 GHz quad-core Intel Core i7 processor, 8GB RAM, and a 251GB flash storage drive. The 15.4-inch display runs at 2880 x 1800 resolution. It has a graphic display problem which causes the computer to go into panic mode and shuts down or restart. I’m told it’s an easy fix. My lost your gain. The computer does work. This happens during a download or upgrade. Pick up is in Richmond hill Queens. Cash or Zelle Pick up only.