STEP 1: Make sure that your microphone is connected to the computer.
Mics that are generally used for mobile phones do not work with laptops and desktops. Laptops generally have inbuilt Mic. Click on 'Start' button and go to the 'Control Panel'.
STEP 2: Click on 'Sound'
STEP 3: Click on 'recording'
STEP 4: Click on 'configure'
STEP 5: Set up microphone by clicking on 'Set up microphone'
STEP 6: Select the type of microphone
STEP 7: Click on 'Next'
STEP 8: Test your microphone
STEP 9: Congratulations! Your microphone is now set up. Click on 'Finish'