Code

Description

Action

 

 

 

8603

Pointing device error

v Install a mouse.

 

No mouse was detected.

Or

 

v Set the mouse option correctly

 

 

 

 

using the Setup Utility.

 

 

If you cannot correct the problem,

 

 

have the computer serviced.

 

 

 

POST beep codes

Another way for POST to notify you of errors is through a series of audible beeps. A beep pattern represents a numeric value and provides further information about the location of a potential problem.

The following are the most common POST beep codes that you might hear when starting your computer.

Beep pattern

Description

Action

 

 

 

1 long and 2 short

No on-screen message. Beeps

Remove and reinstall the dual

beeps

occur before video

inline memory modules

 

initialization.

(DIMMs).

 

 

If the problem persists, have the

 

 

computer serviced.

 

 

 

1 long beep followed

External ROM failure (such as

If the problem persists, have the

by a series of short

VGA)

computer serviced.

beeps

 

 

 

 

 

 

2 short beeps

A POST error occurred.

If you have changed the

 

 

hardware configuration, go into

 

 

the Setup Utility and exit to save

 

 

setting. Otherwise refer to error

 

 

code section to resolve error.

 

 

 

1 short - 3 short - 3

No memory or no

Reinstall the memory.

short - 1 short

configuration memory

If problem persists, replace the

 

 

 

 

memory.

 

 

 

Here are some general guidelines for working with POST beep codes:

vRecord any beep patterns that you hear. If you call for service, you will be asked for the beep patterns.

vIf the beep pattern is not in this book, more in-depth troubleshooting is required.

Chapter 5. Troubleshooting and diagnostics

29

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Lenovo TC A51-8122, 8131, 8124, 8138, 8123, 8137 warranty Post beep codes, Beep pattern Description Action