Computer management>Device manager>Sound, video, and game controllers>audio codecs. just uninstall the ones you don't need or want. I never install any codec packs, except for the wma9_redist.exe and, divx5, and a few specialized codecs I use. Or use http://www.softpedia.com/get/Tweak/Video-T...weak-Tool.shtml this will enable you to repair and remove codecs.