If Windows Update does not find the driver, you can download the universal driver directly from Realtek. The H81 chipset almost universally uses the Realtek High Definition Audio codec.
Using Windows default drivers (HD Audio Device) might give you basic sound, but you lose critical functionality: esonic h81 motherboard audio driver
Because the hardware is a standard Realtek chip, the universal Realtek HD Audio Drivers for Windows 7, 8, 10, or 11 (64-bit) are typically compatible. If Windows Update does not find the driver,