Athlon Unknown 1100 is usually to do with the wrong CPU SPEED SETTINGS (too Low)... either because of loading optimal or default bios settings (or you just bought the mobo)... I don't know which speeds your processor and memory is supposed to be set at - but you do... If the bottom two speeds in CPU SETUP (in bios) don't match those, then you need to increase the cpu speeds until you get the right description in system properties or on black boot-up screen. (PRESS PAUSE/BREAK DURING FIRST BLACK BOOT SCREEN TO SEE INFO) Hope this helps... It doesn't help me track down MY answers - but what the hEY. BLO.