I had the same issue with the latest build, that's why I reverted to an older ISO, but then had the same issue with that too. The behaviour of the menus in both cases was most unusual making it somewhat more challenging to tweak the configurations, however I've since resolved the issue after finding the vendor Restore disk - which basically loads a predetermined set of drivers in order.... I had simply downloaded the drivers from their website, though I guess I must not have installed in the correct order.
Issue resolved now.