For 965P-DQ6、965P-DS4、965P-DS3、965P-S3 motherboard, if the memory setting is not the chipset spec of 800/ 667/533 MHz in the BIOS setting during system installation, then the system will re-write the initial motherboard parameter when the first boot after BIOS seeting. After the re-write is done, the system will reboot. The shutdown and reboot after the first power on is normal situation.
Based on VIA chipset specification, VIA KT400 chipset supports FSB333/266/200 K7 CPU officially. Thus, when you install a FSB400 CPU on the MB comes with KT400 chipset, the CPU FSB will be recognized at 333MHz by BIOS automatically.