No-Beep Symptoms
Symptom / Error
No beep, power-on indicator turns on and LCD is
blank.
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.
Chapter 4
Action in Sequence
Power source (battery pack and power adapter).
Power System Check.
Reconnect the LCD connectors
Hard disk drive
LCD inverter ID
LCD cable
Inverter
LCD
System board
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
Audio board
System board
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