Sound doesnt work Creative SB Audigy SE

Hey everyone, the pc of my girlfriend doesn't play sound, she changed the sound card from Realtek to Creative sb audigy se and everything seems okey, when you go to windows sound properties. on playback devices when you play something it shows those bars moving and on "teamviewer" pc sounds i can hear her pc, but unfortunately she doesnt hear sounds...and we simply...dont know what to do.
Her OS is Win7
I will add any useful and necessary info. just for now don't know what could help...