Lenovo ThinkPad L520 (English) User Guide - Page 188

External monitor problems, Properties, Troubleshoot, Monitor, For Windows XP, Settings, Advanced

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6. Click the Properties button. If you are prompted for an administrator password or confirmation, type the password or provide confirmation. Check the "Device status" box and make sure the device is working properly. If not, click the Troubleshoot button. 7. Click the Monitor tab. 8. Make sure the information is correct. 9. Click the Properties button. If you are prompted for an administrator password or confirmation, type the password or provide confirmation. Check the "Device status" box and make sure the device is working properly. If not, click the Troubleshoot button. For Windows XP: 1. Right-click on the desktop, and click Properties to open the Display Properties window. 2. Click the Settings tab. 3. Check whether the screen resolution and color quality are correctly set. 4. Click Advanced. 5. Click the Adapter tab. 6. Make sure that the correct device driver name is shown in the adapter information window. Note: The device driver name depends on the video chip that has been installed on your computer. 7. Click the Properties button. Check the "Device status" box and make sure the device is working properly. If not, click the Troubleshoot button. 8. Click the Monitor tab. 9. Make sure the information is correct. 10. Click the Properties button. Check the "Device status" box and make sure the device is working properly. If not, click the Troubleshoot button. • Problem: Incorrect characters appear on the screen. Solution: Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced. • Problem: The screen stays on even after you turn off your computer. Solution: Press and hold the power switch for 4 seconds or over to turn off your computer, then turn it on again. • Problem: Missing, discolored, or bright dots appear on the screen every time you turn on your computer. Solution: This is an intrinsic characteristic of the TFT technology. Your computer's display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time. External monitor problems • Problem: The external monitor is blank. Solution: To bring up the image, press Fn+F7 and select the desired monitor. If the problem persists, do the following: 1. Connect the external monitor to another computer to make sure it works. 2. Reconnect the external monitor to your computer. 3. Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that are supported. - If the external monitor supports the same resolution as the computer display or a higher resolution, view output on the external monitor or on both the external monitor and the computer display. 170 User Guide

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6. Click the
Properties
button. If you are prompted for an administrator password or confirmation, type
the password or provide confirmation. Check the “Device status” box and make sure the device is
working properly. If not, click the
Troubleshoot
button.
7. Click the
Monitor
tab.
8. Make sure the information is correct.
9. Click the
Properties
button. If you are prompted for an administrator password or confirmation, type
the password or provide confirmation. Check the “Device status” box and make sure the device is
working properly. If not, click the
Troubleshoot
button.
For Windows XP
:
1. Right-click on the desktop, and click
Properties
to open the Display Properties window.
2. Click the
Settings
tab.
3. Check whether the screen resolution and color quality are correctly set.
4. Click
Advanced
.
5. Click the
Adapter
tab.
6. Make sure that the correct device driver name is shown in the adapter information window.
Note:
The device driver name depends on the video chip that has been installed on your computer.
7. Click the
Properties
button. Check the “Device status” box and make sure the device is working
properly. If not, click the
Troubleshoot
button.
8. Click the
Monitor
tab.
9.
Make sure the information is correct.
10. Click the
Properties
button. Check the “Device status” box and make sure the device is working
properly. If not, click the
Troubleshoot
button.
•
Problem
: Incorrect characters appear on the screen.
Solution
: Did you install the operating system or application program correctly? If they are installed and
configured correctly, have the computer serviced.
•
Problem
: The screen stays on even after you turn off your computer.
Solution
: Press and hold the power switch for 4 seconds or over to turn off your computer, then turn
it on again.
•
Problem
: Missing, discolored, or bright dots appear on the screen every time you turn on your computer.
Solution
: This is an intrinsic characteristic of the TFT technology. Your computer's display contains
multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen
might exist all the time.
External monitor problems
•
Problem
: The external monitor is blank.
Solution
: To bring up the image, press Fn+F7 and select the desired monitor. If the problem persists,
do the following:
1. Connect the external monitor to another computer to make sure it works.
2. Reconnect the external monitor to your computer.
3. Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that
are supported.
–
If the external monitor supports the same resolution as the computer display or a higher resolution,
view output on the external monitor or on both the external monitor and the computer display.
170
User Guide