If you're using some third party backup program, you can ignore that message.
I made backup discs when I got my computer.
Now, over a year later, I am getting a message from my Windows security "Your files are not being backed up".
I use Carbonite, so do have backup from them.
I am using Windows 7 64 bit.
How does Windows backup work? Would it be duplicating things on my computer? I don't want to take up space unnecessarily.