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#1
Start with installing the drivers for both your video card and sound, as neither are installed yet. That is the reason it is showing as "high definition audio device" for everything, as both are running on the default Windows drivers. Once that is done they will change to show the name of what they are from; the name of the sound card and the name of the video card (all the HDMI ones). May even find that there is less of them as well.
Ah ok, thanks a lot, just was curious, my sound drivers are installed tho
No they're not or it would show the name of the sound card or onboard sound. Any time it shows as "high definition audio Device" it is running on the default Windows audio driver which has just about enough functionality to get sound out of the computer. You want it to work properly (5.1, headphone detection, etc), then you need to install the proper driver for it.