I have used both of the new ASUS ROG G20 series computers and both of them have encountered this problem in mere days. I haven't been able to do anything about it with the higher quality model (Can't remember the name but here's a link http://www.asus.com/Desktops/ROG_G20BM/) as I can't use the blue video cable on the back. I'm thinking of just getting it replaced but does anybody know what causes this problem so that I may avoid it in the future? Thank you if you understand what I'm trying to say. PLease help me