Macbook pro won't boot with two new 4GB RAM sticks.

I have a mid 2010 Macbook Pro. It came with two 2GB RAM sticks. After downloading Lion, my computer started to get sluggish so I thought I would upgrade the ram. I bought two 4GB Corsair RAM sticks and tried to install them. My computer will boot up if I install one of the new 4GB sticks and leave an old 2GB stick; but it won't boot with both of the new 4GB sticks. Any ideas?

rdsvs wrote:
all specs are the same. old and new has code as below
pc2-5300 ddr2 667 200pin
Unless I misread your reply, that is not quite accurate.
Late 2008 Macbooks uses DDR3 1066MHz 204 PIN.
Late 2011 Macbooks uses DDR3 1333MHz 204 PIN.
Late 2012 Macbooks uses DDR3 1600MHz 204 PIN.

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Macbook pro won't boot with two new 4GB RAM sticks.

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