Your nero is out of date, current version is 6.6.0.18. Your Firmware is also out of date, current is 1.10d, here is a link to update it http://forum.rpc1.org/dl_firmware.php?download_id=2179 YOu are writing too close to the edge of the disc. Write no further than 4300MB. One last thing. what kind of media are you using? I don't think your dirve is recognizing it.