logitech g930

I have no sound in my headset (Logitech G930) It changed it's own name and picture in the windows sound-settings to "Earphone headset" and since it did that my headset have had no sounds. I've tried connecting the headset to another PC with Windows and it worked perfectly. Any help around here...

I sometimes use skype for business calls. Is the wireless connection on g930 encrypted or can it be listened by others easily?