I have DellN5040 which does not work properly on skype. I have checked all audio settings number of times and microphone, speaker etc seem to be responding well when I test those. But whenever, I have call on skype, i am not able to hear other person. I hear a alien type of voice. When I mute my microphone, I start hearing other person's voice. Then, I keep my microphone on mute for 5 mins and then unmute. The speaker and microphone start working properly. Again, I face the same problem in a few minutes. I have updated the drivers and all. Could anybody please suggest what could be the root cause? Also, coult anybody tell me how to check if I have any other device or something installed that's causing this? Please suggest. Thanks in advance.