Hi,

Click on the start button> Select the Start search box> Type Device

Device Manager option should appear in the start menu, left click on it.

See if the driver for the sound card has any yellow exclamation/red cross mark beside it.

If it has a mark, right click on the driver and select uninstall driver, restart the computer.
It should automatically be re-installed.

You could also perform Windows update to get the driver after uninstalling it.

Could you post your feedback after trying this?