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Chapter 4: Troubleshooting
143
No-beep error messages
No-beep Error Messages FRU/Action in Sequence
No beep, power-on indicator turns off
and LCD is blank.
• Test the power source (battery pack and power
adapter). See “Testing the power system” on page 138.
• Make sure that every connector is connected tightly
and correctly.
• Reconnect the SO-DIMM.
• Test or replace the LED board.
• Test or replace the system board.
No beep, power-on indicator turns on
and LCD is blank.
• Test the power source (battery pack and power
adapter). See “Testing the power system” on page 138.
• Reconnect the LCD connector
• Check the hard disk drive.
• Check the LCD inverter ID.
• Check the LCD cable.
• Test or replace the LCD inverter.
• Test or replace the LCD.
• Test or replace the system board.
No beep, power-on indicator turns on
and LCD is blank. But you can see POST
on an external CRT.
• Reconnect the LCD connectors.
• Check the LCD inverter ID.
• Check the LCD cable.
• Test or replace the LCD inverter.
• Test or replace the LCD.
• Test or replace the system board.
No beep, power-on indicator turns on
and a blinking cursor shown on LCD
during POST.
• Make sure that every connector is connected tightly
and correctly.
• Test or replace the system board.
No beep during POST but system runs
correctly.
• Test or replace the speaker.
• Test or replace the system board.