I am curious, what if you cannot boot up Windows 7, how will you restore the backup?
Unless some drive-imaging utility has been used, you generally reinstall the OS and whatever backup program was used. Then restore the rest using the backup program. "Channeling the spirit of jboy..."
A Windows 7 DVD is the way to boot an unbootable computer. It is a recovery environment. Unless you did use some other program not MS.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.