I just bought 512 pc4000 ram, but for some reason it won't run on my GA-K8N Pro. WHen i turn on the computer, it powers up, and at the first screen (where you see cpu speed, ram, harddrive, cd-roms etc) the computer just stops there, and doesnt go any further. now my fsb is runnign at 200mhz,and the ram is at 250mhz. do I need to overclock my cpu in order for the ram to work?? or it should just automatically work. thx