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No-Beep Symptoms
Symptom / Error
No beep, power-on
indicator turns on and LCD
is blank. But you can see
POST on an external CRT.
No beep, power-on
indicator turns on and a
blinking cursor shown on
LCD during POST.
No beep during POST but
system runs correctly.
LCD-Related Symptoms
Symptom / Error
LCD backlight doesn't work
LCD is too dark
LCD brightness cannot be
adjusted
LCD contrast cannot be
adjusted
Unreadable LCD screen
Missing pels in characters
Abnormal screen
Wrong color displayed
LCD has extra horizontal or
vertical lines displayed.
Chapter 4
Action in Sequence
Reconnect the LCD connectors.
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Ensure every connector is connected tightly and
correctly.
System board
Speaker
System board
Action in Sequence
Enter BIOS Utility to execute "Load Setup Default
Settings", then reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightness function key
doesn't work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Reconnect the LCD connector
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
LCD inverter ID
LCD inverter
LCD cable
LCD
System board
93
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