If Windows has been re-installed and the disk formatted then these files have probably been lost.
Even if you had a virus you probably could have saved your photos and music BEFORE it got "scrubed".
I am not sure who told you it needed to be scrubbed but they could have almost certainly saved these photo and music files before they were lost, so that was pretty bad of them.
Yours is a classic situation where I say to people BACKUP your important files on a regular basis, either to an external hard drive, or (better still) to CD or DVD