A SIMPLE SEARCH WOULD HAVE BEEN WRONG.
that quote only applies to retail bios or some modified bios LED codes.
it means nothing with a cromwell bios. the cromwell bios is built from scratch.
if i remember correctly, (been about a month since i've seen it)...
both the flashbios, and the cromwell bios have a flashing yellow on successful boot.
you seem to be having a video output issue.
let me boot one up and get back to you.
if anyone has a fresh duox2-white install out there, please make note of the LED ring codes here.