gah thats terrible news steve. however, from my experience with the ram sticks (i did try several) it wouldnt even boot with the stick in there. it would say "firmware timed out" on the cards' bios loading screen. So, maybe it is just a bad stick? or maybe it is just not 100 percent compatible. thats a tough one. you might consider RMA of stick, or running memtest on that stick in a DDR2 machine (ifn you have one of them dinosaurs )