Lenovo ThinkPad X140e - Manual (Page 128)

(the resolution and the refresh rate) that you have set. If it does not, set a display mode that the monitor
supports. If it does support the display mode you have set, go to the setup menu for the monitor itself
and adjust the settings there. Usually the external monitor has buttons for access to the setup menu. For
details, see the documentation that comes with the monitor.
Audio problems
• Problem: Wave or MIDI sound does not play correctly.
Solution: Make sure that the built-in audio device is configured correctly.
1. Open Control Panel and click Hardware and Sound.
2. Under Devices and Printers. click Device Manager. If you are prompted for an administrator
password or confirmation, type the password or provide confirmation.
3. Double-click Sound, video and game controllers.
4. Make sure that the Realtek HD Audio driver is enabled and configured correctly.
• Problem: Recordings made using the microphone input are not loud enough.
Solution: Make sure that the Microphone Boost function is turned on and set by doing the following:
1. Open Control Panel and click Hardware and Sound.
2. Click Sound.
3. Click the Recording tab in the Sound window.
4. Select Microphone, and click the Properties button.
5. Click the Levels tab, and move the Microphone Boost slider upwards.
6. Click OK.
Note: For details about controlling volume, refer to your Windows online help.
• Problem: A volume or balance slider cannot be moved.
Solution: The slider might be grayed out. This means that its position is fixed by the hardware and
cannot be changed.
• Problem: The volume sliders do not stay in place when some audio programs are used.
Solution: It is normal for the sliders to change position when certain sound programs are used. The
programs are aware of the settings in the Volume Mixer window and are allowed to change the settings
themselves. An example is the Windows Media Player. Usually the program has sliders available to
control the sound from within the program.
• Problem: The balance slider cannot completely mute one channel.
Solution: The control is designed to compensate for minor differences in balance and does not
completely mute either channel.
• Problem: There is no volume control for MIDI sound in the Volume Mixer window.
Solution: Use the hardware volume control. This is because the built-in synthesizer software does
not support the control.
• Problem: The sound cannot be turned off completely even if you set the Master volume control at
minimum.
Solution: You still can hear some sound even though you have set the Master volume control at minimum.
To turn off the sound completely, go to the Master volume control and select Mute speakers.
112 User Guide