I don't know if this is something to be worried about but I notice that when the tip of the display port cord ( from the ACD ) touches the metal frame of my MacBook Pro there is a tiny blue arch of electricity visible. Well, I just bumped that cord into the frame of the MBP and as soon as that happened the computer completely shut off, it just went to a black screen and turned back on when I connected it via AC outlet. When the computer started back up the clock was messed up ( 2008 date ) and it had forgotten all of my WIFI passwords. I was just wondering why this happens? And is it harmful?