Latest update : KongorJr called me just now. He said the asus service centre called him up just now. They tell him they format update driver update bios etc, and they try to play call of duty(dunno which one) and the graph didn't drop. They asked KongorJr to pick up his laptop on Monday. KongorJr said he will bring along the games and test it on the spot see if got problem or not. If still got problem he will request a 120W power brick and test it on the spot as well. I think we can only pray in the mean time.....