It appears that it is a problem with Realtek HD audio driver, so I manually downloaded it, but still the sound is very. The process known as Realtek WOWL Utility belongs to software REALTEK Wireless LAN Driver or Realtek WOWL Utility by Realtek (Provides a default (but optional) System Tray icon which allows you to manage audio device settings and gives you access to the Sound Manager and other multimedia functions.
Realtek HD Audio Manager is one of the most widely available sound card driver applications, dedicated to provide users with the tool sound chips on their motherboard with the most accurate sound quality, access to all features of the onboard hardware, resolve compatibility issues that may be present with basic Windows drivers, fix various errors that may appear during the throughout.
