Ribbon installition

I have installed a new motherboard nd after lots of troubles go it up and going but now I can not get the ribbon to work right--I have a hard drive-cdrom and cd rewriter--I can us a ribbonfor two hook up and I am fine but not the one that I need to use that has space for 4 hook ups--I have changed the settings on everything with the jumpers--please help--this is a new Asu P5GC-mx mother board