I'm having another problem now. I get the error:

"tried to set 0x4e to 0x3 on ICH4/ICH4-L failed"

Can you paste/attach the full verbose log (flashrom -V > log) from DOS ?

I get the error whether dmidecode.exe is present or not.

flashrom under Linux works on the same machine.

On what hardware are you using flashrom ?
What is the manufacturer's URL of the board ?

I'd like to see the verbose output when running on linux.

I tried setting "plug and play OS" option in BIOS off, but that didn't help.