Perform the following steps:
-> Open your Start Menu
-> Select Control Panel
-> Choose "Sound"
-> In the "Playback" tab, double-click your default device (most likely "Speakers")
-> Go to the "Advanced" tab
-> Change the "Default Format" to"DVD Quality"
After applying the changes with "OK", reboot your system.
- If the above doesn't change anything, check if you are launching the game in the so-called safemode by any chance. Switch it off and see if that helps.
- If you use digital audio tools or sound processing software, turn it off, please.
- If if does not help, change your default sound device to a different one in your audio settings, please.
- Finally, re-install your Realtek High Definition Audio driver, please.