You may also manually test your system:

1. Left-click on the Speaker icon in your system tray (on the bottom-right corner of your screen) one time and raise the volume bar to the top. Make sure Mute is not checked. (If the icon is not there, click Start and select Settings, Control Panel and Multimedia or Sounds and Multimedia. Make sure that the Show volume control on the task bar option is checked and click OK at the bottom of the window).
2. If that's not sufficient, double-click on the Speaker icon. Make sure that none of the options are muted and that all levels are turned above 50%.
3. Click on Options, Properties, Recording and click the OK at the bottom of the window. Make sure that Microphone Balance is the only option selected and the level is turned up above 50%.
4. Close the window and try to use Voice in Messenger.

Perform this simple test to determine whether your microphone and speakers are connected and adjusted properly:

1. If you are currently in a voice chat conference, close the conference window.
2. Close any other programs you have open that may be using your microphone or speakers.
3. Click the Windows Start button in the lower-left corner of the screen.
4. Select Programs, Accessories, Entertainment or Multimedia and click Sound Recorder.
5. Click on the Record button (a red circle), say a few words into your microphone, then click the Stop button (a black square). While recording, you should see the sound waves from your voice displayed on the strip chart at the top of the Sound Recorder window.
6. Click the Play button (a black triangle) to hear what you just recorded.
7. If you do not hear anything but see the sound waves from your voice, then something is wrong with your speaker setup. If you do not see the sound waves from your voice, then the problem is with your microphone setup.

If you encounter an error along the way, you may also manually perform these tests:

1. Left-click on the Speaker icon in your system tray (on the bottom-right corner of your screen) one time and raise the volume bar to the top. Make sure Mute is not checked. (If the icon is not there, click Start and select Settings, Control Panel and Multimedia or Sounds and Multimedia. Make sure that the Show volume control on the task bar option is checked and click OK at the bottom of the window).
2. If that's not sufficient, double-click on the Speaker icon. Make sure that none of the options are muted and that all levels are turned above 50%.
3. Click on Options, Properties, Recording and click the OK at the bottom of the window. Make sure that Microphone Balance is the only option selected and the level is turned up above 50%.
4. Close the window and try to use Voice in Messenger.

If you have any further problems, please contact the company that made your computer for help setting up your speakers and microphone correctly.