How to set up the microphone

win7 system how to set up the microphone? Newly installed win7, but the microphone can not be used, what should I do? Now teach everyone to set up the microphone.
Step method
1. Reinstall the sound card driver?
2. Right click on the small speaker icon in the lower right corner and select “recording device”.

3. Select “Record” in the "Sounds" screen of the device that opens. Then select “microphone”, then select “properties"

4, select “level" in the microphone property setting screen, and strengthen the microphone and microphone to the right position in the level. . (The microphone is pulled too much to listen to the noise)

5, right click on the volume icon (task bar small speaker) & rarr; recording equipment & rarr; select the recording that → select the microphone & rarr; click on the attribute & rarr; Click on the level item &rarr in the microphone properties box; pull the microphone and microphone boost to the far right (maximum) → finally click OK