If the driver is already installed on your system, updating (overwrite-installing) may fix various issues, add new functions, or just upgrade to the available version.
If there is a yellow mark next to device name, then it has problems. The package provides the installation files for Realtek High Definition Audio Driver version. After the computer restarts, the installation of the Realtek High Definition Audio Driver Update is complete. At the 'User Account Control' screen, click 'Yes'. Next you can click Sound, video and game controllers category to expand it, and you should see Realtek High Definition Audio or Realtek Audio in the list. Go to the directory where the file was downloaded and double-click the EP0000601035.exe file to begin the installation.
Take into consideration that is not recommended to install. Realtek High Definition Audio Driver for Windows 10 (32-bit, 64-bit), 8.1 (32-bit, 64-bit), 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), XP - ThinkPad.