Corsair RAM in dual channel mode

hi,
I just got my PC,at last night i start my computer the screen remain black ... So again restart the PC, to look what's wrong ... memory setting
(A bolt in a yellow and the others in a black slot). How does it work; The PC runs high.I have two bars (2x 2GB) is not in the yellow (It works only when a bolt in a yellow and the other in a black slot connector)

My Board: Asus M3N-HT Deluxe
RAM: Corsair Dominator 4 GB DDR2 240-pin - 1066 MHz (PC2-8500)
graphic card: nVidia GeForce GTX260 (216)

Or do I have in bios the voltage (2.1 V) settings?I was wondering how to set the value select ram to dual channel or even if they can be set for dual channel.

hi,
I believe one stick HAS to be in DIMM slot # 3 for dual channel mode.

Send them back to Corsair. Either your motherboard has a problem (unlikely) or the sticks aren't matched and make sure they are the same type of memory **IE** Simm, Dimm or Rimm