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Beep and no beep symptoms - ThinkPad A2*, T2*

Note: The most likely cause is listed first, in boldface type.

Beep Symptoms
Symptom or errorFRU or action, in sequence
One beep and a blank, unreadable, or flashing LCD
  1. Reseat the LCD connector
  2. LCD assembly
  3. External CRT
  4. System board.
One long and two short beeps, and a blank or unreadable LCD
  1. System board
  2. LCD assembly
  3. DIMM.
Two short beeps with error codes POST error.
Two short beeps with blank screen
  1. System board
  2. DIMM.
Two or more beeps, or a continuous beep. Operating System starts successfully.If a Mini PCI Ethernet card is installed, confirm that Alert On LAN 2 in BIOS Setup Utility is disabled.
Three short beeps, pause, three more short beeps, and one short beep.
  1. DIMM.
  2. System board
One short beep, pause, three short beeps, pause, three more short beeps, and one short beep.
Only cursor appears
Reinstall operating system.


No Beep symptoms
Symptom or errorFRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no POST
  1. Make sure that every connector is connected tightly and correctly
  2. DIMM.
  3. System board.
No beep, power-on indicator on, and LCD blank during POST
  1. Reseat DIMM.
  2. System board.
No beep during POST, but system runs correctly
Speaker.
The power-on password prompt
A power-on password or a supervisor password is set. Type the password and press Enter.
The hard-disk password prompt
A hard-disk password is set. Type the password and press Enter.
The DOS full screen looks smaller.
Start the ThinkPad Configuration program and set the Screen expansion function.

 



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Document ID : HT036617
Legacy Document ID : MIGR-4K7KB7
Last Updated :
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