my sound on my computer is not working. i am on windows vista and my sound just went off. i have checked and apparently everything is working correctly. can ANYONE help me please

Hi,Here is the forum for Exchange,for issue about Windows Vista related,I recommned you to post in Microsoft TechNet>Forums Home>Windows Vista IT Proto get relevant help.For this issue,generally,I will try to update my media card driver and check if you have plug your sound equipment correctly. Regards,Xiu