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• “The monitor works when you turn on the computer, but goes blank when you start some application
programs” on page 99
• “The image appears to be ickering” on page 99
• “The image is discolored” on page 100
Wrong characters appear on the screen
Symptom: Wrong characters appear on the screen.
Action: Have the computer serviced. For details, see Chapter 11 “Getting information, help, and service” on
page 109.
The monitor works when you turn on the computer, but goes blank after some period
of computer inactivity
Symptom: The monitor works when you turn on the computer, but goes blank after some period of computer
inactivity.
Action: The computer is probably set for energy savings with the power-management feature. If the
power-management feature is enabled, disabling it or changing the settings might solve the problem.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see Chapter 11 “Getting information, help, and service” on page 109.
The monitor works when you turn on the computer, but goes blank when you start
some application programs
Symptom: The monitor works when you turn on the computer, but goes blank when you start some
application programs.
Actions:
• Make sure the monitor signal cable is securely connected to the monitor and the monitor connector on
the computer. A loose cable can cause intermittent problems.
• Verify that the necessary device drivers for the application programs are installed. Refer to the
documentation for the affected application program to see if device drivers are required.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see Chapter 11 “Getting information, help, and service” on page 109.
The image appears to be ickering
Symptom: The image appears to be ickering.
Actions:
• The monitor might be operating in a low-refresh rate display mode. Set the monitor to the highest,
noninterlaced refresh rate supported by your monitor and the video controller in your computer.
Attention: Using a resolution or refresh rate that is not supported by your monitor might damage it. Check
the documentation that comes with your monitor to verify the supported refresh rates.
• The monitor might be affected by interference from nearby equipment. Magnetic elds around other
devices, such as transformers, appliances, uorescent lights, and other monitors might be causing the
problem. Move uorescent desk lighting or any equipment that produces magnetic elds farther away
from the monitor. If this does not correct the problem, do the following:
1. Turn off the monitor. (Moving a color monitor while it is turned on might cause screen discoloration.)
Chapter 10. Troubleshooting and diagnostics 99