No sound after the update

[Jack Ammo <jack.ammo1@gmail.com>]

Hi.  Sound was working for me with the 4.1beat1(4.0.0.80) but after the 
4.0.0.82 update it's no longer working.  mixer looks ok.  Any ideas?  My 
mobo card is an AsusM2NPV-VM.  It has the  nVidia Corporation MCP51 High 
Definition Audio (rev a2)
Thanks for your help.