PC with Microphone connected
a. Double Click
on Sound Icon (lower right hand corner of task bar) 
b. Click on
Options, Properties 
c. Make sure
MIC Volume is checked, then click OK
d. Check the Mic Volume to make sure it is up
PC with Microphone connected
a. Double Click
on Sound Icon (lower right hand corner of task bar)
b. Click on
Options, Properties
c. Make sure
MIC Volume is checked, then click OK
d. Check the Mic Volume to make sure it is up