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.”.Here’s how to find the Realtek audio driver with automatic search via device manager: Open “Settings” using the “Windows + I” hotkeys or via the “Start Menu.”.