Sound problem. sir, i got lappy of compaq and vista was installed but i was femilear with win xp.

Question

sir, i got lappy of compaq and vista was installed but i was femilear with win xp. so in that i m not getting the sound driver anywer. with out sound i cant use lappy. plzz help. model compaq c773tu sound for win xp, my mail id

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thanx