Hi tatone_996
I am not sure if the Blackops has the same limitations as the "generic" X48 chipset, but if it does you will not be able to run 8GB @ 1600Mhz, instead you will need to back down to something like 1333Mhz, perhaps you might want to set the RAM speed to 1333Mhz before putting the extra stick of RAM in?
Have you tested both pairs separately?
FYI 8GB should read as 8192MB reading as 8096 may suggest the RAM is defective?
John