The DVD backup software. I can't tell if that's Microsoft or another name but without knowing the title of said software I can't comment.
For instance, Roxio, Nero and others have backup software which you may have used then after the OS was reinstalled you tried Vista's restore software but your DVDs are in some other format.
When My computer crashed, I was not concerned about losing my files as I had just carried out a complete backup (backing onto DVDs) using the Windows Backup supplied with Vista Ultimate. When I tried advanced restore to try and get my files back on to the computer. I put a DVD with backup on into the drive, and got a message saying that Windows was not able to find any backup sets on the drive. The backup is certainly on the DVDs, I just cant get the computer to see it.
I have some important documents in the backup, unfortunately I am not able to access them.
I would appreciate any advice.