I had similar problems and over 10 other problems all stemming from possibly the worst software ever, realtek.
I just got this sound card - http://www.overclockers.co.uk/showproduct.php?prodid=SP-149-CL&groupid=701&catid=11&subcat=
Great sound card, works very well with teamspeak too.
I just got this sound card - http://www.overclockers.co.uk/showproduct.php?prodid=SP-149-CL&groupid=701&catid=11&subcat=
Great sound card, works very well with teamspeak too.