No-Beep Symptoms; Beep Symptoms - Lenovo ThinkPad S431 Hardware Maintenance Manual

Table 3. Error messages (continued)
Symptom or error (beeps, if any)
The battery installed is not supported by this system
and will not charge. Please replace the battery with the
correct Lenovo battery for this system. Press the ESC
key to continue.
This system does not support batteries that are not
genuine Lenovo-made or authorized. The system will
continue to boot, but may not charge unauthorized
batteries.
Attention: Lenovo has no responsibility for the
performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out
of their use.

No-beep symptoms

Table 4. No-beep symptoms
Symptom or error
No beep, power-on indicator on, LCD blank, and no
POST.
No beep, power-on indicator on, and LCD blank during
POST.
The power-on password prompt appears.
The hard disk password prompt appears.

Beep symptoms

Table 5. Beep symptoms
Problem
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Three short beeps, pause, one short beep, pause, one
more short beep, and three short beeps
One long and two short beeps
Four cycles of four short beeps
Five short beeps
Five short beeps, pause, five short beeps, and pause
FRU or action, in sequence
Unauthorized battery is connected to the system. Press
the ESC to continue.
Unauthorized battery is connected to the system. Press
the ESC to continue.
FRU or action, in sequence
1. Ensure that every connector is connected tightly
and correctly.
2. Memory module.
3. System board.
1. Reseat the Memory module.
2. System board.
A power-on password or a supervisor password is set.
Type the password and press Enter.
A hard disk password is set. Type the password and
press Enter.
Solution
Ensure that memory modules are installed correctly. If
they are, and you still hear the beeps, have the computer
serviced.
PCI resource allocation failure. Power off the computer
and remove the PCI devices. If the beeps persist, have
the computer serviced.
The video function has a problem. Have the computer
serviced.
The Security Chip has a problem. Have the computer
serviced.
The system board has a problem. Have the computer
serviced.
Continue to boot immediately when the error was
detected.
Chapter 4
.
Related service information
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