Backup and Restore, put simply, just doesn't work on Vista Home Premium.
Many files are not backed up, and dangerously it leads you to believe that the backup was successful! I have just learnt from another forum that it doesn't do .exe and other files!
Home Premium doesn't even do complete backups.
It is not up to the job of trying to be a professional operating system. A basic requirement of an operating system for the past 50 years has been the task of backing up (& restore if ever needed).
Without this it should not even be released to Beta Testing.
It is not "fit for purpose" (a legal consumer phrase in the UK) and you should get your money back from the supplier.