You need to know what sound card you're using. You can install a standard set of audio drivers that comes with Windows, but it's best to install ones specific to your card. If you go into Device Manager, you can check what sound card you're using. You can then either search for a replacement on the internet, or check if Windows has a compatible set of drivers for it.
_________________
"Hitting bottom isn't a weekend retreat, it isn't a goddamned seminar. Stop trying to control everything and just let go!"