Vista deleted my profile files and many other

> Hello,
>
> Something unbelivable just happend today to my Vista 64 Ultimate. I was
> logged into it and just wanted to start world of warcraft to play a bit.
> when i started it i just received some message telling me the game
> cannot authenticate me coz of the lack of some needed files. I opened
> the warcraft folder and almoust all the files from its root were
> missing. Then rebooted the computer but vista failed to start as i was
> receivin some Boot/BCD error 0xc000000f. I used the repari from vista
> dvd and i finnaly repaired the boot but when i was about to logg into my
> account this doesent want to load...my account profile files are
> completly gone....all of them ...desktop shortcuts, downloads etc
> evereything. Now im logged into somtype of temporary profile and i dont
> know what to do...system restore doesent want to start either.
> i use bullguard antivirus updated every day which showed no sign of
> virus etc...im not a newby in computers and i know very well what can
> get me into trouble with viruses, trojans, malware etc and im 99% sure i
> didnt got any ...
> i really dont know what to do in this situation....i also dont know
> what files im still missing more....since as i said not only vista files
> where missing but my WoW file located in completly another folder and
> also all my downloads documents everything from my profile...
> i have 3x500gb HDD mounted in RAID 5...the raid its healthy with
> nothing to worry about....
>
> please help me
> Thank you