if you have the 4-4-4-12-2t memory, it boots up at JEDEC voltage specs, which is lower than the EPS rated 2.1 for that memory (I think JEDEC specs for DDR2 is 1.8v? Anyone correct me if I'm wrong).
If your memory is the 5-5-5-12-2t version, then the voltage is 1.9v.
So as Colster said, it may...