I have two sticks of corsair RAM both 8gb each. I have a msi z77a g43 motherboard. The RAM is compatible with the motherboard and all of my RAM slots read both of my sticks of RAM individually. When memory is pulled up in task manager, it reads that 2 out of 4 slots are taken up, but only 8 gb ram is available. I just updated my motherboard to the latest version of bios and reinstalled the RAM sticks. Still same thing. PLEASE HELP!!!!