i bought a headset a couple of days ago for my pc (steelseries 4h) and they dont work. my pc doesnt recognise them. i cant hear any sound and the mic isnt working. it says they are their but when i select them it says no audio device is installed. they work on my ipad and phone but not my pc. ive tried every port and even bought a usb adapter to try and get them to work but still no luck. if you have any ideas it would be very much appreciated