I bought this motherbaord so i didnt have these problems because the motherboard supports up to 800mhz or pc2-6400 ram but when i get into windows it bluescreens with ERROR : MEMORY_MANAGEMENT and ive looked this up but cant find anything on why this ram and my motherboard aren't working together.. also it is a 4x2gb kit with 2 sticks saying pc2-6400u and other 2 saying pc2-6400s but i thought pc2-6400s was sodimm but also im getting PFN_LIST_CORRUPT as a blue screen (windows 7 pro 64 bit)