this can happens when you try to flash with a alternate flash program or a wrong parameter. To solve this issue, you have to flash the original bios version that was on the mainboard when you tryed to update the mainboard with this flash tool and parameters; AFUDOS.EXE biosfile.rom /P /B /N /K /C. When you have done that, you can upgrade the bios with the same tool and parameters; AFUDOS.EXE biosfile.rom /P /B /N /K /C