headphone doesnt appear on playback device?? windows 10 pro? help

[Zinyak]

i have hp elitedesk 800g1 twr and i have just installed windows 10 pro on it. headphone works fine but on volume mixer-realtek hd audio it still appear to be speaker. I have enabled disabled devices in playback, recording tab but headphone doesnt appear.
is there any way the volume mixer could detect headphone rather than speaker(volume)?

i am unable to play games like COD. it ask me to plug your headphone?? help please

 

[Colif]

what brand headphones are they? Could there be drivers for them?

what connection type do they have - USB or analog?

 

[Zinyak]

I have a4tech headphone and there is no software for it.. I use front panel round pin analog