Craig:
This doesn't sound like a BIOS problem whereas you'd have to update. this does however seem to be a need for a BIOS reset.
First check the connections and the jumpers for your DVD Drive. If you have just one optical drive and one hard drive, set them up as master drives but connect them to separate IDE connections on your motherboard. In any case you'd want your hard discs as master drives because they are faster than optical drives and set them up as primary on the connection chain. (not needed for SATA)
After you check your connections, reset the BIOS manually. there should be a jumper or switch on the motherboard. make sure you do this with the power off and the computer unplugged! even with the computer off, the power supply feeds current to the motherboard and you will damage it and/or anything you plug into or remove from the board so make sure you unplug the power! While you are doing this, make sure you check the IDE connections from the motherboard to the DVD drive and it's power supply feed. If the IDE connection is not complete, the drive will not be detected by the system BIOS at boot up or the OS in the system device hardware control panel.
After you reset the BIOS, reboot the system and check the devices identified in the BIOS.
Last but not least for future reference, whenever you are performing any maintenance on your computer (requiring you to access the motherboard and components) ALWAYS check and re-seat your expansion cards and memory plugged into the motherboard. Something will always be jarred loose while you are working so it's best to check and re-seat your plugged-in hardware. I hope this helps you.
Good luck!