Hello ? Recently my computer is trying to disobey my wish.... The problem was, 1) I turned on the computer Sometimes 1) Freezing when I see Win7 Log. 2) Freezing when safely skip log but stopped in the background. When that happened my "Power Supply" suddenly speed up: It is trying to "KaBrrrrrr !!!" sound. I turned off computer immediatly. - this happened randomly. I am using this problematic computer to write Thread. I do not know when it will happen again.