It would be obvious if your motherboard only used DDR2 memory and you tried to put in DDR3, or if your mobo only could take DDR2 PC6400 and you tried to put 8500 but just just a brand? Nah it must work ...
Some boards just don't like certain RAM. My P5Q Pro absolutely refused to run my OCZ Platinum 6400 at its rated speed.
In this case, though, it looks like the problem may be Minato's mobo itself.