Using a Dell Dimension 8200. Two sticks of 256 RDRAM PC800. I bought two more sticks of 128; Samsung PC800 45ns ECC Rambus ram. I turned off my computer, pulled out the two filler sticks in RIMM1 and 2, and put the new sticks in. Turned on the computer, and it took me to a black page, with a message about unsupported ram, or something like that, and to use only 800-40 or faster ram. What's the problem?