Go into Camera Properties - then Audio tab - On the top there are 3 radio buttons, select "Other DirectShow device". Select the Microphone for your c920. Click OK.
Alternate option is to just uncheck box "Enable audio channel" at the top of Audio tab)
Go into Camera Properties - then Audio tab - On the top there are 3 radio buttons, select "Other DirectShow device". Select the Microphone for your c920. Click OK.
Alternate option is to just uncheck box "Enable audio channel" at the top of Audio tab)