Since Sigmatel is out of business, you can use Google search engine to find and download a sound driver for your system. Also, you can use a driver identifier from Software Informer database. Once you download it, right-click on the Computer icon, select Manage and open Device Manager. After that, expand the Sound, video and game controllers list, right-click on the sound driver and select Update Driver Software. Use the Browse option to navigate to the installation package, select the driver and install it following the provided instructions.
