So, I stepped away from my laptop for about 20 min, and when I came back, a vertical yellow line had appeared on my screen out of nowhere on right side running from top to bottom as if a column of single pixels decided to mutiny. I tried messing around w/ the screen resolution settings but nothing. It's an ASUS G75 that I've had since Dec. '12, so is it a question of age/wear? Or is there a way to fix it? I've already rebooted it a few times but no dice.... Thanks in advance for any help.