I can't answer your question in regards to Windows Backup, but I will make a quick suggestion.
Due to the fact that Windows Backup isn't as reliable as many of the third party alternatives, I highly suggest that you try one. My favorite is Macrium Reflect Free Edition, but Norton Ghost is a good product as well.
In the case of Macrium, it allows you to create a carbon copy of any hard drive or partition. Once you've created your first copy, you should create the Boot CD using the Linux Live CD option and attempt to revert to that system image by booting into the CD. If all goes well and you successfully restore your computer using the system image and boot cd, then you know you have a reliable backup solution.