i have nothing to back it up on!
If you don't, then you don't go ahead with an upgrade, but you wait until you do have something to back up your data.
What was a such big deal about Vista, that it couldn't wait for a while?
Now, you have nothing, no songs, and no Windows.
how does it format in 10 seconds
What do you mean by "format"?
When you upgrade, nothing gets formatted.
Tell us slowly, what exactly happened, and what is the CURRENT situation with that computer?