No idea, but that's not the problem I believe. The process is that back-up data is first generated and only later, after it has done that, it asks to insert the CD/DVD (DVD in my case). But this very first phase of data gathering / generation it does not seem able to properly initiate. Normallly a status bar prvides progress for this phase - now no status bar is visible. It does request however that the computer be plugged in - it won't run on battery powwer - and this the correct message that I would expect. Hope this info is of use. Thanks.