[osprey4]

The first thing to do would be to try Dell's standard troubleshooting steps for CD/DVD drives. Obviously, you've already done the firmware.

Since Nero also is not working, that rules out the IMAPI service as the primary cause. It might also be worth deleting the upper and lower filters. After you do this, you may find it necessary to reinstall Nero if the program does not recognize your drive as a burner.

Let me know what you tried and what happened (something more than "that didn't work").

Good luck!