Actually, it wasn't your BIOS problem at all. You have all centered onto his Motherboard BIOS as a source of the "problem". We have just purchased a Asus P4P800-E Deluxe Motherboard that has identical Promise Fastrack Controller with the same message being displayed. That Controller can be easily disabled by accessing your BIOS > "Advanced menu" > "Onboard Devices Configuration", and setting "OnBoard Promise Controller" option to disabled. By reseting your BIOS you probably just defaulted that option. In addition, after you install the appropriate driver for that Controller (Drivers CD that came with your Motherboard) that message will stop showing up. That is, if you require that controller after all.