I have an Early 2011 MacBook Pro that is giving me some issues. The logic board was replaced in February 2016 under the recall program for these laptops. Several days ago, I was using it normally (not moving it) on a table when the screen went mostly black with green visual artifacts. It then shut down. I tried restarting it, and it booted to a white screen and stayed there for several minutes before I hard shut it off. I tried booting it again, and it beeped three times. Because this indicates a memory issue, I did some troubleshooting by testing the machine in all possible memory module/slot configurations, ie module A in slot 1, module B in slot 1, etc. The problem persists in all possible configurations, suggesting an issue with the logic board. My questions: Is this definitely a logic board issue, or is there something that I am missing (besides the possibility that both RAM chips went bad simultaneously...) Is this definitely unrelated to the GPU issue that plagues these laptops? If it is the logic board, is there any warranty for the logic board, given that it was only replaced 6 months ago? Thanks!