I found out that 2 usb ports in the motherboard were not working properly. Even with a usb drive windows was unable to recognize. However other two usb ports work fine and apac now works fine too, but something tells me that I have to replace the motherboard soon.
One thing that I haven't find a solution (well it's not a problem actually) is that the start (yellow) light in VR panel keeps on an off constantly without turning off when starting the game. So I have it always turned off because it is annoying to have the yellow light blinking when in game. Does any one know how to fix this?