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Troubleshooting 4-5
No Display Issues 0
If the Display does not work, perform the following, one at a time. Do not replace a
non-defective FRU:
Figure 4-2. No Display Issue
No POST or Video 0
If the POST or video does not appear, perform the following, one at a time.
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
If no power, refer to Power On Issues.
3. Drain stored power by removing the power cable and battery. Hold the power button for 10
seconds.
4. Connect the power and reboot the computer.
START
Power On?
Ext.DDRRAM
Module well
connected?
Ext DDRRAM
Module OK?
CPU Thermal
Module well
screwed?
LCD Moduel
OK?
NG Power On Issue
Replace MB
NG Check Connection
NG
Replace
Ext. DDRRAM
Modul e
NG Fasten Screw
NG
Replace LCD
Panel/LCD Cable