Troubleshooting 4-4
No Display Issues
If the system does not display, perform the following:
Figure 4:2. No Display Issues
No POST or Video
If the POST or video does not appear, perform the following:
1. Make sure that internal display is selected. Switching between internal and external by
pressing Fn+F5. Reference Product pages for specific model procedures.
2. Make sure the computer has power by checking for one of the following:
• Fans start up
• Status LEDs illuminate
3. If there is no power, refer to Power On Issues on page 4-3. Otherwise, continue to the next
step.
4. If there is power, drain the stored power by removing the power cable. Hold the power button
for 10 seconds.
5. Connect the power and reboot the computer.
6. Connect an external monitor to the computer and switch between the internal display and the
external display is by pressing Fn+F5.
7. If the POST or video appears on the external display only, refer to LCD Picture Failure on
page 4-6. Otherwise, continue to the next step.
8. Disconnect the power and all external devices including port replicators or docking stations.
9. Remove any memory cards and CD/DVD discs.
10. Start the computer. If the computer boots correctly, add the devices one by one until the failure
point is discovered.
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