When you click on the device manager, the "sounds, video and game controllers" section isn't listed because there are no audio devices installed. The only sound driver is called "High Definition Audio Controller" and it is under the category of "system Devices". It also has a yellow triangle with an exclamation point next to it to state that it is indeed not working. if you go into it's properties, the Device status states:
"This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful."
Personally mine shows up at the moment because it is recognizing my webcam. But before I plugged that in, the category wasn't there. I am assuming it might be the same with JpNoro.
Edit: oh yeah, and the hardware ID's for, at least, mine are
PCI\VEN_8086&DEV_1C20&SUBSYS_1AA31043&REV_05
PCI\VEN_8086&DEV_1C20&SUBSYS_1AA31043
PCI\VEN_8086&DEV_1C20&CC_040300
PCI\VEN_8086&DEV_1C20&CC_0403
Not sure if they would be the same for JpNoro, but there you go.
Those are HDMI audio ID's, and it's not harmful that they come up "Code 10" if you don't have an HDMI screen connected to the computer.
So if you expand "Sound, video and game controllers" (two up from "System Devices") there's nothing listed? There should be a Realtek entry there, and it'll have "VEN_10EC" somewhere in the hardware ID.