Hi,
· Does it echo all the time until you mute the sound or when you are doing something specific or using a particular application?
· Were there any changes made to the computer before the issue occurred?
Method 1:
To remove the echo effect you may try the steps given below and check if that helps.
a) Open Sound by clicking theStart button, and then clicking Control Panel. In the search box, typesound, and then clickSound.
b) Click theRecording tab, click Microphone, and then clickProperties.
c) On theListen tab uncheck the option "Listen to this device".
d) Apply the settings and check if that helps.
Method 2:
If that does not help then try to disable microphone using the below given steps.
a) Open Sound by clicking theStart button, and then clicking Control Panel. In the search box, typesound, and then clickSound.
b) Click theRecording tab, click Microphone, and then clickProperties.
c) Under Device usage select ‘Don’t use this device (disable)’ option and apply the settings.
Check if that helps.
Refer:
Hope this information is helpful.
Amrita M
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.