I am having some trouble with two RAM sticks on the Asus M5A97 LE R2.0 MOBO. I am using two Kingston 4GB (KVR1333D3N9/4G) RAM sticks in the blue slots on the MOBO. When in the BIOS settings, both RAM sticks are recognised in the "Tools" menu, but the total memory is only 4GB on the "Main" menu...