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CHAPTER 4: Troubleshooting
146
No-beep error messages
Invalid System Configuration Data • Test or replace the BIOS ROM.
• Test or replace the system board.
I/O device IRQ conflict • Run “Load Setup Defaults” using the BIOS Setup Utility, then
reboot the notebook.
• Test or replace the CMOS battery, run the BIOS Setup Utility
to reconfigure system time, then reboot the system.
• Test or replace the system board.
Operating system not found • Run the BIOS Setup Utility and see if fixed disk and drive A:
are properly identified.
• Test or replace the diskette drive
• Test or replace the hard disk drive
• Test or replace the system board
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 140.
• 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 140.
• 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.
Error Messages FRU/Action Sequence