You'll need to check the Device Manager for your sound card type, then visit the manufacturer's website and download their updated drivers.
Hope this helps.
I am now having problems with my sound card when I play music in Yahoo. I had malaware and spyware last week and since then my sound is scratchy and loud and yet seems perfect to me. Is there away for me too check or fix my sound card, maybe during all the hijack this and various downloads I needed to do, its altered my sound, or could it be the spywareblaster that I have running now that is affecting it? Anyone have any ideas for me?