my computer wont recognize my new headphones. the sound plays through them but the computer still doesn't recognize. When I go to sounds, then recording, my computer only recognizes my built in computer speaker and mic. the headset is meant for a computer with a separate audio and mic jack but it comes with a cable to connect it to my headset jack computer. I bought another headset like this one last year but I had the same problem so I had to buy one to plug into my usb ports. someone please help. thanks.