Troubleshooting
If you have a problem setting up or using your monitor, you might be able to solve it yourself. Before calling your dealer or Lenovo, try the suggested actions that are appropriate to your problem.
Table3-2.Troubleshooting
Problem | Possible cause | Suggested action | Reference |
The image | The USB cable | Be sure the USB cable is |
quality is | is not connected | firmly plugged into the |
unacceptable. | with the monitor | system and monitor. |
| or system |
|
| completely. |
|
“Connecting and turning on your monitor” on page
The power indicator is not
lit and there is no image.
One or more of the pixels appear discolored
LT1421 wide monitor is turned
off when the laptop’s
●There is no power at the outlet.
●The USB cable is loose or disconnected with the monitor or system.
This is a characteristic of the LCD technology
and is not an LCD defect.
“igfxpers.exe”
turn off the display
●Try using another electrical outlet.
●Be sure the USB cable is connected properly.
If there are more than five pixels missing, contact the Customer Support Center.
Step1:Press “Winkey+R”key Step2:Input “msconfig” Step3:Select “Startup
“Connecting and turning on your monitor” on page
Appendix A, “Service and Support,” on page
power supply is switched from AC to DC
Step4:You will see the column of “command”, find
C:﹨Windows\system32\igfxpers.exe”, then uncheck it.
Step5:Press “Apply”
Getting further help
If you still can’t solve your problem, please contact the Customer Support Center. For more information on contacting the Customer Support Center, please see Appendix A, “Service and Support,” on page
