this is a really strange problem.... when i put my 512mb pc3200 in the first slot of my abit ic7 max3 board, it will not boot. i tried clearing the cmo and even removing the battery, no luck. however, when i move the ram to the second slot it starts to boot, then freezes while loading windows. the third slot gets a little further into booting windows. finally, the fourth slot will boot and the machine runs seemingly stable... can run doom 3 and numerous benchmarks, including sisoft sandra memory benchmark. alas, if the box is bumped (i.e. i move it and it jerks a little perhaps) it will no longer boot until i clear the cmos and have the ram in the fourth slot. im am completely baffled by this. i might consider buying a new board, but i would want to move up to the new intel chipsets with pcix and that is too much of an investment since it would also require a new processor and ram. thanks for any help you can offer.