Once the latest sound driver has been found, click “Install.”.Click “Search automatically for updated driver software on the next screen.”.Expand the “Sound, video, and game controllers” option, then right-click on the “Realtek High Definition Audio” option.From the search box on the taskbar, type “Device Manager.”.Double-click the setup file when the file has been downloaded, then follow the steps to install the latest Realtek HD Audio Drivers.If your system isn’t listed, you may need to download the “High Definition Audio Codecs Software.” Alternatively, if you’re using an older system, download the driver for “AC’97 Audio Codecs Software.”.Under the “Description” category, locate the correct driver for your system, then hit the “Download” icon.Go to the HD Audio Codecs Software page in a new web browser.If you can’t find the drivers with the above method, try downloading them from the Realtek website. Once the installation is complete, select “Close,” and then restart your PC for the changes to take effect.Then hit “Install” to complete the process. Wait while the latest Realtek audio drivers are found.From the prompt, select “Search automatically for drivers.”.Expand the “Audio inputs and outputs” option and then right-click “Speaker/Headphone (Realtek (R) Audio.”.Right-click “Start” and then choose “Device Manager.”.