External Monitor Problems - Lenovo ThinkPad Edge E145 User Manual

– If the problem persists, follow the solution for the following problem.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that:
– The display device driver is installed correctly.
– The screen resolution and color quality are correctly set.
– The monitor type is correct.
To check these settings, do the following:
1. Right-click anywhere on the desktop, and click Screen resolution.
2. Click Advanced Settings.
3. Click the Adapter tab to ensure that the correct device driver name is shown in the Adapter
Information window. Then 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 that the device is working correctly. If the device is not working correctly, click the
Troubleshoot button and follow the instructions on the screen.
Note: The device driver name depends on the video chip that has been installed on your computer.
4. Click the Monitor tab to ensure that the correct monitor type is shown in the Monitor Type window.
Then 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 that the
device is working correctly. If the device is not working correctly, click the Troubleshoot button and
follow the instructions on the screen.
Note: The device driver name depends on the video chip that has been installed on your computer.
5. Click the Colour Management tab, and then click the Colour Management button. In the displayed
Colour Management window, click the Advanced tab and ensure that the settings in the Windows
Colour System Defaults area are set as desired. If you are prompted for an administrator password
or confirmation, type the password or provide confirmation.
• Problem: Incorrect characters are displayed on the screen.
Solution: Did you install the operating system or 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 button for four seconds or more 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 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 F6 and select the desired monitor. If the problem persists, do
the following:
1. Connect the external monitor to another computer to make sure that it works.
2. Reconnect the external monitor to your computer.
.
Chapter 9 Troubleshooting computer problems
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