Have u updated the audio driver u can find it in the device manager check to see if it need it and if it dont then try to uninstall and re install the driver for it that should fix it if that dont work the mic u have might not be getting recognized by the program after u shut down and if thats the case u should not shut the pc down to often as u will blow the power supply switch out faster then it was intended for if and if u can give me a little more info on exactly whats going on then i can better assist u