The A7N8X series of boards are VERY snobbish about the type of ram that you use. Alot of it has to do with the Nforce2 chipset that is used on the board. When you are using PC3200 you HAVE to go with very high quality ram. Corsair XMS, Kingston HyperX, Muskin, or OCR gold series. If the ram you are using isn't one of those.... Well, let's just say, it would be a good idea to exchange what you have. I have heard that some people have gotten away with lesser quality ram, but they are the exception not the rule.