broken headset :[

well today everything was great but on 1 moment my headset was really acting weird. one time i heard it normal , the other time i heard nothing .. not in ET , not on comms..
so i putted my headset in another usbport no response .. now my headset does nothing :[
some1 knows what this is maybe i fucked something up ?

or give some tips about buying a new one ( if its really broken :p )