I can burn cds no problem, but not dvds on the fly. It starts the process and then I keep getting a power failure message. The solutions Nero gives are 1)update the recorder from manufacturer (Its a Sony Vaio) I did that,I have the latest driver, or they say 2) recorder is defective have it repaired, but it burns cds no problem. What do you think the problem is? Can DVDs be copied 'on the fly'? Any suggestion is appreciated.