The R2.79 driver is a reliable fallback for anyone struggling with sound on Windows 7 through 10. It offers the classic control panel interface and broad hardware support that newer "DCH" drivers sometimes lack. disable Windows Auto-Updates to prevent your drivers from being overwritten?
Windows 10/11 loves to "auto-update" drivers. If your sound breaks after a day, Windows likely replaced R2.79 with a newer, generic version. Use the Show or Hide Updates troubleshooter
A system restart is required for the new driver to initialize and for the Realtek Audio Manager to appear in your system tray. Usage Note