Try this: Go to Control Panel, double click Sound. In the Recording tab, you should see your microphone icon with a Green check mark on it. If there is no Green check mark, it means it is disabled. To enable the Microphone Right click on Microphone and click on Enable.How do you setup a microphone?
Click on the "Start" button, go to "Control Panel," then click "Sound.". Click on the "Recording" tab, highlight your microphone and click the "Configure" button. Here you can set various options for the microphone and test it.