Lenovo ThinkPad E580, Руководство пользователя, Страница: 83 / 142

3. Right-click on the desktop, and then click Display settings ➙ Display .
Note: If your computer cannot detect the external monitor, click Detect in the Display window.
4. Click the icon for the appropriate monitor ( Monitor-2 icon is for the external monitor).
5. Click Display adapter properties .
6. Click the Monitor tab.
7. Select the correct screen refresh rate.
• Problem : Wrong characters are displayed on the screen.
Solution : Ensure that you follow the correct procedure when installing the operating system and program.
If they are installed and configured correctly, but the problem still persists, have the external monitor
serviced.
• Problem : The Extend desktop function does not work.
Solution : Enable the Extend desktop function. See “Using an external display” on page 26.
• 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. See “Using
an external display” on page 26.
• 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 .
Chapter 7
.
Troubleshooting computer problems
67