426mhz

this is my rig:- amd athlon64 x2 3800+ asus m2n pv-vm, 1gb 667mhz transcend ram, lg dvd writer, seagate 40gb X 2 hdd, 17" crt lg moniter the problem is when i try to run harry potter - prisoner of azkaban(game) it terminates with an errer saying "Unknown processor at -426Mhz" thats right...