Ram Memory not show but Ram slot is ok Ram is ok.

[Munirology]

My ASUS P8Z77-V-LE motherboard have 4 Ram Slot , Every Slot is working good . I try to one by one every slot is working pc run smoothly.
Ram Slot Diagram (Black-Blue-Black-Blue)

Ram Use Diagram { setup (Black-Blue)-Black-Blue)} = not working

Ram Use Diagram { (Black-Blue - setup(Black-Blue)} = not working

Ram Use Diagram { (setup Black)-Blue - Black-(setup Blue)} = working good

Ram Use Diagram { Black-(setup Blue - Black) -Blue)} = working good

Ram Use Diagram { Black-(setup Blue) - Black -(setup Blue)} = working good

Ram Use Diagram { (setup Black)- Blue - (setup Black) -Blue)} = working good

I have 3 Ram , Previous time I use 3 Ram same Pc Parts same motherboard . How to solve this problem ?