Well... only a million different possible reasons... does Nero work to burn data and/or audio? Are you using the latest firmware for your model of burner?? Are you using the latest ASPI drivers??? More details would be required... You should re-post your Nero/VCD problem in the CDR troubleshooting forum with as much details (i.e. hardware, software, drivers, version numbers of everything...) as possible... There are a lot of Nero experts that hangout in this forum!