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#11
That motherboard's sound is typical. It does not have RealTek, it as "Via HD Audio". In addition this comes with a trial version of Creative SoundBlaster MB software which is a software enhancement to the VIA HD Audio.
Suggest you download (1) INF Driver (Motherboard chipset drivers) then (2) Via HD Audio drivers and finally, optional, the Creative MB software. Install the chipset drivers first.
ASRock > H55M-LE