If the dweebs can't reinstall Windows right, then they aren't bright enough to be computer techs. I would demand my money back and try another shop. I have never used I-Tunes at all, much less on a Linux system, but everything else your daughter wants is a cinch on Ubuntu Linux. That's what I am running right now. It updates online like Windows, but is simple to do and has never messed up.
I think the problem came not just from re-installing Windows, but from re-installing Windows with the new service packs. The new service packs are not compatible with other parts of the computer, like the sound system and gawd knows what else.
I’ve never understood why Windows drives computer people up a wall—but I’m starting to understand now.