Make sure you dont have the mic muted via the switch on the headset.
Next make sure the default recording device is set to the Corsair headset in the audio properties
Make sure you dont have the mic muted via the switch on the headset.
Next make sure the default recording device is set to the Corsair headset in the audio properties
Just to add on to what popatim suggested, you want to make sure that you have downloaded the latest Corsair driver for the headset, http://downloads.corsair.com/content.xhtml#