Are you sure you connected the wires properly? I also use a cosair H80, make sure you have connected the 4 pin power cable directly to the PSU, and the 2 fans connected to the centre console (where the profiles light up) Then theres another wire which comes out from the center console which plugs in to the mother board.
From what you've just said, it sounds like you connected to two fans directly to the motherboard
no. it is conected to the centre console. now I've discovered one of the fan will not spin. I've tried another port besides centre console, but it is still not spinning. the other one spins fine. I have the Molex connector with 2 pin things that came with the h80 connected, but lights ain't working.