Lenovo THINKPAD P71, User Manual, Page: 101 / 146

Solution : Enable the Extend desktop function.
• Problem : I am using the Extend desktop function, but I cannot set a higher resolution or higher refresh
rate on the secondary display.
Solution : Change the resolution and the color depth to lower settings for the primary display.
• Problem : Display switching does not work.
Solution : If you use the Extend desktop function, disable it, and change the display output location. If
a DVD movie or a video clip is playing, stop the playback, close the program, and then change the
display output location.
• Problem : The screen position on the external monitor is incorrect when that monitor is set for a high
resolution.
Solution : Sometimes, when you use a high resolution such as 1600 x 1200 pixels, the image is shifted to
the left or right on the screen. To correct this, first ensure that your external monitor supports the display
mode (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 more information, see the documentation that comes with the monitor.
Audio problems
• Problem : Wave or MIDI sound does not play properly.
Solution : Ensure that the built-in audio device is configured correctly.
1. Go to Control Panel, and ensure that you view Control Panel by Category.
2. Click Hardware and Sound .
3. Click Device Manager . If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
4. Double-click Sound, video and game controllers .
5. Ensure that the device following Sound, video and game controllers is enabled and configured
correctly.
• Problem : Recordings made by using the microphone input are not loud enough.
Solution : Ensure that the Microphone Boost function is turned on and set by doing the following:
1. Go to Control Panel, and ensure that you view Control Panel by Category.
2. Click Hardware and Sound .
3. Click Sound .
4. Click the Recording tab in the Sound window.
5. Select Microphone , and click the Properties button.
6. Click the Levels tab, and move the Microphone Boost slider upwards.
7. Click OK .
Note: For more information about controlling volume, see your Windows online help.
• Problem : I cannot move the volume slider or balance slider.
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 enabled to change the settings
Chapter 7
.
Troubleshooting computer problems
85