Solution:

If you use Version 1.0 BIOS on Rev. B board, You cannot warm reboot and somtime cannot go into CMOS or screen dispare. To correct this please do: 1. load "optimal setting" in CMOS 2. Change the "AT bus closk" from 14.318/2 to PCLK2/12 from item "Advanced CMOS setting". If you did not make this change, system will hang during hot boot.