Please use the latest BIOS located here, and flash with Qflash NOT @BIOS (Guide link second)
After your flash be sure you are loading optimized defaults and save/apply/reboot back to the BIOS before making changes.
You should have your OS drive (RAID Array) in SATA2_0 and SATA2_1 (Blue), then your CD/DVD Drive in SATA2_5. If you do not have this now you need to move your array into this order, which may mean a reinstall is needed. So if you do need to move them, and need anything on your system make a backup first so you are prepared in case you do need to reinstall which is often the case.