Did you try use any programs like teamspeak,vent,see if it works fine there ?
Make sure you plug in the colour cable in the right one mine is other, green for headset,red/light for mic.I had this problem once but I could hear but people couldn't hear me because of the mic,I didn't choose the correct settings in the audio settings.few days messing myself in it I got it worked.
Make sure you plug in the colour cable in the right one mine is other, green for headset,red/light for mic.I had this problem once but I could hear but people couldn't hear me because of the mic,I didn't choose the correct settings in the audio settings.few days messing myself in it I got it worked.