I'd only try it as a last resort, but if he can't find a solution and reinstalling doesn't fix it, what other option has he got?
Yep, that's Premium: "prepaid-DLC". Plus you get extra dogtags, soldier camos, double XP weekends, etc.
Asides from saving a few bucks on the DLC, most of the extra stuff is just for the wank-factor. (Soldier camos are shithouse. And carbon-fibre dogtags?
).
I won't play Blizzard's game but I'll play EA's, and if they burn me, well...it'll only happen once.