If you don’t see a signal when you test the microphone, you may have a problem with your device’s audio enhancements (APOs). To disable audio enhancements:
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Select Additional device properties from the Device Properties panel. (Start > Settings > System > Sound > Select your microphone from the dropdown under Input > Device Properties >Additional device properties)
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Depending on your manufacturer, the setting to disable audio enhancements will either be on the Enhancements tab, or the Advanced tab.
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On the Enhancements tab, select either the Disable all enhancements or the Disable all sound effects check box (depending on which option you see), and then select OK.
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If you don't see the setting there, select the Advanced tab, and look for the setting, Enable audio enhancements. If the manufacturer located the setting here, uncheck the box to disable audio enhancements.
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If you have more than one audio input device, repeat these steps for each device and then test your microphone.
