Beep Codes

Beep codes are used by the BIOS to indicate a serious or fatal error to the end user. Beep codes are used when an error occurs before the system video has been initialized. Beep codes will be generated by the system board speaker, commonly referred to as the PC speaker.

AMIBIOS displays the checkpoints in the bottom right corner of the screen during POST. This display method is limited, since it only displays checkpoints that occur after the video card has been activated.

Not all computers using AMIBIOS enable this feature. In most cases, a checkpoint card is the best tool for viewing AMIBIOS checkpoints.

Beep Symptom

Cause and Description

 

 

One short beep

System is ready.

 

System is OK.

 

 

Continuous one long beep

Memory not installed or memory error.

 

 

One long beep and two short beeps

VGA not installed or VGA error.

then repeat.

Graphics card error/not installed, graphics card memory error or

 

graphics card BIOS checksum error.

 

 

One long beep then two short beep

BIOS damaged.

 

BIOS is damaged, BIOS POST jumps to Boot Block to execute the

 

default procedures.

 

 

Two short beeps

CMOS damaged.

 

CMOS checksum error or CMOS battery loss occurs.

 

 

Boot Block Beep Codes

Number of Beeps

Description

 

 

1

No media present. Insert diskette in floppy drive A:

 

 

2

‘AMIBOOT.ROM’ file not found in root directory of diskette in A:

 

 

3

Insert next diskette if multiple diskettes are used for recovery

 

 

4

Flash Programming successful

 

 

5

Floppy read error

 

 

7

No Flash EPROM detected

 

 

10

Flash Erase error

 

 

11

Flash Program error

 

 

12

‘AMIBOOT.ROM’ file size error

 

 

13

BIOS ROM image mismatch (file layout does not match image present in flash

 

device)

 

 

POST BIOS Beep Codes

Number of Beeps

Description

 

 

1

Memory refresh timer error.

 

 

3

Base memory read/write test error

 

 

6

Keyboard controller BAT command field

 

 

7

General exception error (processor exception interrupt error)

 

 

8

Display memory error (system video adapter)

 

 

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Chapter 4

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Acer X3400, X5400 manual Boot Block Beep Codes, Post Bios Beep Codes, Beep Symptom Cause and Description

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