Try to get one Bios file PC660ALL.bin from Hei-Sei Customer Service Dept. Utility file à Awdflash.exe
Step 1.
Boot up the system from A: Dos6.22. Press F5 key during booting up to by Bypass Autoexec.bat and Config.sys in order to make pure DOS mode.
Step 2.
A:\> Awdflash PC660ALL.bin Press "Y" to save current bios, and give it a file name as you wish Give it a name (as you wish), then it will save and back up into your floppy. After saved, press "N" not to program PC660ALL.bin Bios into your system.