You were correct, the 2 sets of slots one set blue one set black, the blue set the current ram was taken out. All slots cleared. The new ram Transcend 1GB stick was instaled in the blue slot. It booted up right away, took it out and put the other Transcend 1GB stick in same slot blue, and all i got was a black screen no boot. Put 3 sticks back in Hynix and Transcend all booted up to 3GB, put the 4th 1gb stick witch was the one that didn't boot up and all, put it in the black slot, all i got was the blue screen that i usualy see at start up. It never moved beyond that screen after 10 minnites. My conclustion is one Transcend 1GB stick is bad. What do you think?