Lenovo ThinkPad X230i (English) User Guide - Page 45

If you mute the sound and then turn off your computer, the sound will remain muted when you turn on your computer again. To turn on the sound, press the speaker mute button again or press the volume control button. Setting the volume functions To adjust the output volume or the recording volume on the Windows 7 operating system, do the following: 1. Click Start ➙ Control Panel ➙ Hardware and Sound ➙ Sound. The Sound window opens. 2. Click the Playback tab or Recording tab, and then click a device that you want to customize. 3. Click the Properties button. 4. Click the Levels tab, and then change the volume by moving the slider. Note: You also can get access to the desktop volume control by using the volume icon on the taskbar at the lower right of the screen. For details about controlling volume, refer to your Windows help information system. Setting the microphone mute button By default, when you press the microphone mute button, all of the recording devices are muted or unmuted. If you want to control only one of the recording devices using the microphone mute button, do the following: 1. Press Fn+F6. The Communications settings window opens. 2. Click the Manage Settings button. The Communications Utility window opens. 3. On the VoIP Call Settings tab, click Microphone mute button settings. The Setting for Microphone Mute window opens. 4. Select Only the recording device selected below:. Then select the recording device from the drop-down list box. 5. Click OK. Windows key Press this key to open the Start menu of the Windows operating system. You also can use the Windows key together with another key to achieve other functions. For details, refer to the help information system of the Windows operating system. Chapter 2. Using your computer 29