You may get an error like this one: “Access violation at address 005ab2d6 in module RTHDCPL.EXE. Read of address 70532D60”.
The first thing you need to try is updating your audio drivers.
In my case I was using drivers from 2007 so I updated from version 220.127.116.1197 to version 18.104.22.16810 dated 7/7/2011
To get drivers goto RealTek’s website at: http://www.realtek.com