Asus P4P800E problem!!!?

Question

My motherboard P4P800E have problem! can someone help me? Means that one memory channels (the blue slots) ist broken. To be exact, I can't get my 2 memory sticks run in dual mode, i.e. the second channel of the first pair (blue ones) is dead. However, my system works in the second bank, but I don't know if it is still in dualmode, as the first pair is supposed to be installed in the falty slot.

Answer 1

A pair on the black slots will run in dual channel mode. A pair on Channel B (blue & black) will run in single channel mode.

Check page 8 of attached:
http://www.kingston.com/newtech/MKF_520DDRwhitepaper.pdf