Lenovo ThinkPad Edge E525 - Manual (Page 143)

Note: To change the color settings, select the Monitor tab, then set Colors.
16. Click OK.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that the monitor information is correct. (Refer to the “Solution” to “Problem: You
cannot set a higher resolution than the present one on your external monitor.” on page 124.)
Make sure that the appropriate monitor type is selected. (Refer to the “Solution” to “Problem: You cannot
set a higher resolution than the present one on your external monitor.” on page 124)
Make sure that an appropriate refresh rate is selected by doing the following:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an electrical
outlet.
2. Turn on the external monitor and the computer.
3. Right-click on the desktop, and click Screen resolution.
Note: If your computer cannot detect the external monitor, click the Detect button.
4. Click the icon for the desired monitor (the Monitor-2 icon is for the external monitor).
5. Click Advanced Settings.
6. Click the Monitor tab.
7. Select the correct screen refresh rate.
• Problem: Wrong characters appear on the screen.
Solution: Did you follow the correct procedure in installing the operating system or application program?
If you did, have the external monitor serviced.
• Problem: The Extend desktop function does not work.
Solution: Enable the Extend desktop function by doing the following:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an electrical
outlet.
2. Turn on the external monitor and the computer.
3. Right-click on the desktop, and click Screen resolution.
4. Click the Monitor-2 icon.
5. Select Extend these displays for multiple displays.
6. Click the Monitor-1 icon (for the primary display, the computer display).
7. Select the resolution of the primary display.
8. Click the Monitor-2 icon (for the external monitor).
9. Select the resolution of the secondary display.
10. Set the relative position of each monitor by dragging its icon. You can set the monitors in any relative
position, but the icons must touch each other.
11. Click OK to apply the changes.
Note: To change the color settings, right-click on the desktop, and click Screen resolution. Click
Advanced Settings, select the Monitor tab, then set Colors.
• Problem: Display switching does not work.
Chapter 9 . Troubleshooting computer problems 125