Windows 7: There's no Realtek in Device Manager

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

I've installed the chipset drivers and audio drivers. I do have some questions though:
1. What is typical about motherboard's sound?
2. Why does manufacturer state Realtek when it has Via?
I suppose Via doesn't support stereo mix?

Most modern PC sound does very good, compared to 5 or 10 years ago where you needed a separate sound card. I have a home computer based recording studio so I'm well attuned to audio.

I don't know why they stated RealTek when ASRock lists the Via. A blunder on the PC vendor.

Via should support Stereo Mix, most all do. It may not show up initially and may be either disabled or disconnected. Go to the Control Panel/Hardware and Sound and finally the Sound Panel. In the Recording section if it is shown you can enable it and set it as default recording device. If not shown, RIGHT click in an empty area in that panel then LEFT click to show disabled and disconnected devices. It should now show up and you can enable it and make it the defaul recording device.

When I downloaded VIA and installed it, the only thing I could see is Microphone and Line in which were both unplugged. When I clicked on an empty area the disabled and disconnected devices is already checked and nothing else appears.
Then I downloaded Stereomixplus, but stereo mix doesn't show up.

Strange, most current sound chips are supporting Stereo Mix. Maybe its because the Creative SoundBlaster MB software is included, which provides it (Creative calls it "What You Hear"). Apparently the custom PC builder failed to include that. Did the PC come with the AS Rock install disc? If so, the Creative should be on the install disc. If the PC vendor did not supply that, go back to the PC vendor to get it.

I may be off base, but maybe this will help, although it called "What U Hear". "What U Hear" Recording - Enable

Then its not an Asus obviously. I can't make head nor tails out of what machine you have either. Realtek says it has no piece described. The closest is an ALC 888.

Heres how to get and post your system spec.'s, which we'll need to help you.

System Info - See Your System Specs

It says AssRock board, with ATI HE audio. Confusing.

I'll say!

I've located a CD Intel series IIH55-14b from ASRock. Should I put it in?