Update. The two new 2GB sticks are working fine in slots 2 and 4. Still can't get anything to read in slot 1. I did manage to blow some trash out of the slot with some canned air, before trying my original stick back in there, but still nothing. I am going to put my other stick into slot 3 and hope for the best. I spent the day changing my OS to a 64 bit and getting all my drivers back. I do appreciate all of you helping me with this issue. Still confused about the #1 slot not working. Don't understand how something goes out just like that. Hopefully if I can get the other stick to work in the 3rd slot, I will, at least, have 6GB of RAM to work with. If need, I'll just invest in larger sticks, but they are very expensive for my old machine.