Sometimes it helps to install newer audio drivers. Find your current audio driver version in Control Panel/System/Device Manager. Your sound card will be listed. Find the version number and write it down. Then go to your computer maker's website to see if newer drivers are listed. Be sure they are for you system though.
My sound will not work at all with a couple of DOS games. The games' troubleshooting guide says so. Tweak, tweak, tweak. Some games require as much fiddling with the system as playing the game.