TOPIC: [BIOS] Beep Codes: guide to troubleshooting

BIOS Beep Codes (AMI Known as American Megatrends International & Phoenix)

When a computer is first turned on, or rebooted, its BIOS performs a power-on self test (POST) to test the system's hardware, checking to make sure that all of the system's hardware components are working properly. Under normal circumstances, the POST will display an error message; however, if the BIOS detects an error before it can access the video card, or if there is a problem with the video card, it will produce a series of beeps, and the pattern of the beeps indicates what kind of problem the BIOS has detected.
Because there are many brands of BIOS, there are no standard beep codes for every BIOS. The two most-used brands are AMI (American Megatrends International) and Phoenix.

AMI Beep Codes

Beep Code Meaning

1 beep - DRAM refresh failure. There is a problem in the system memory or the motherboard.

2 beeps - Memory parity error. The parity circuit is not working properly.

3 beeps - Base 64K RAM failure. There is a problem with the first 64K of system memory.

4 beeps - System timer not operational. There is problem with the timer(s) that control functions on the motherboard.

5 beeps - Processor failure. The system CPU has failed.

6 beeps - Gate A20/keyboard controller failure. The keyboard IC controller has failed, preventing gate A20 from switching the processor to protect mode.

7 beeps - Virtual mode exception error.

8 beeps - Video memory error. The BIOS cannot write to the frame buffer memory on the video card.

9 beeps - ROM checksum error. The BIOS ROM chip on the motherboard is likely faulty.

10 beeps - CMOS checksum error. Something on the motherboard is causing an error when trying to interact with the CMOS.

11 beeps - Bad cache memory. An error in the level 2 cache memory.

1 long beep, 2 short - Failure in the video system.

1 long beep, 3 short - A failure has been detected in memory above 64K.

1 long beep, 8 short - Display test failure.

Continuous beeping - A problem with the memory or video.

Phoenix Beep Codes

Phoenix uses sequences of beeps to indicate problems. The \"-\" between each number below indicates a pause between each beep sequence. For example, 1-2-3 indicates one beep, followed by a pause and two beeps, followed by a pause and three beeps. Phoenix version before 4.x use 3-beep codes, while Phoenix versions starting with 4.x use 4-beep codes. Click here for AMI BIOS beep codes.

4-Beep Codes

Beep Code Meaning

1-1-1-3 Faulty CPU/motherboard. Verify real mode.

1-1-2-1 Faulty CPU/motherboard.

1-1-2-3 Faulty motherboard or one of its components.

1-1-3-1 Faulty motherboard or one of its components. Initialize chipset registers with initial POST values.

1-1-3-2 Faulty motherboard or one of its components.

1-1-3-3 Faulty motherboard or one of its components. Initialize CPU registers.
1-1-3-2
1-1-3-3

1-1-3-4 Failure in the first 64K of memory.

1-1-4-1 Level 2 cache error.

1-1-4-3 I/O port error.

1-2-1-1 Power management error.
1-2-1-2

1-2-1-3 Faulty motherboard or one of its components.

1-2-2-1 Keyboard controller failure.

1-2-2-3 BIOS ROM error.

1-2-3-1 System timer error.

1-2-3-3 DMA error.

1-2-4-1 IRQ controller error.

1-3-1-1 DRAM refresh error.

1-3-1-3 A20 gate failure.

1-3-2-1 Faulty motherboard or one of its components.

1-3-3-1 Extended memory error.
1-3-3-3
1-3-4-1

1-3-4-3 Error in first 1MB of system memory.
1-4-1-3

1-4-2-4 CPU error.
1-4-3-1

2-1-4-1 BIOS ROM shadow error.
1-4-3-2

1-4-3-3 Level 2 cache error.
1-4-4-1
1-4-4-2

2-1-1-1 Faulty motherboard or one of its components.
2-1-1-3

2-1-2-1 IRQ failure.

2-1-2-3 BIOS ROM error.
2-1-2-4

2-1-3-2 I/O port failure.
2-1-3-1

2-1-3-3 Video system failure.
2-1-1-3

2-1-2-1 IRQ failure.

2-1-2-3 BIOS ROM error.

2-1-2-4 I/O port failure.
2-1-4-3

2-2-1-1 Video card failure.
2-2-1-3
2-2-2-1

2-2-2-3 Keyboard controller failure.

2-2-3-1 IRQ error.

2-2-4-1 Error in first 1MB of system memory.
2-3-1-1

2-3-3-3 Extended memory failure.

2-3-2-1 Faulty motherboard or one of its components.
2-3-2-3

2-3-3-1 Level 2 cache error.
2-3-4-1

2-3-4-3 Motherboard or video card failure.
2-3-4-1
2-3-4-3

2-4-1-1 Motherboard or video card failure.

2-4-1-3 Faulty motherboard or one of its components.

2-4-2-1 RTC error.

2-4-2-3 Keyboard controller error.

2-4-4-1 IRQ error.
3-1-1-1
3-1-1-3
3-1-2-1

3-1-2-3 I/O port error.
3-1-3-1

3-1-3-3 Faulty motherboard or one of its components.
3-1-4-1
3-2-1-1

3-2-1-2 Floppy drive or hard drive failure.

3-2-1-3 Faulty motherboard or one of its components.

3-2-2-1 Keyboard controller error.
3-2-2-3
3-2-3-1

3-2-4-1 Faulty motherboard or one of its components.

3-2-4-3 IRQ error.

3-3-1-1 RTC error.

3-3-1-3 Key lock error.

3-3-3-3 Faulty motherboard or one of its components.
3-3-3-3
3-3-4-1
3-3-4-3
3-4-1-1
3-4-1-3
3-4-2-1
3-4-2-3
3-4-3-1
3-4-4-1

3-4-4-4 Faulty motherboard or one of its components.

4-1-1-1 Floppy drive or hard drive failure.
4-2-1-1
4-2-1-3

4-2-2-1 IRQ failure.
4-2-2-3
4-2-3-1
4-2-3-3

4-2-4-1 Faulty motherboard or one of its components.

4-2-4-3 Keyboard controller error.
4-3-1-3
4-3-1-4
4-3-2-1
4-3-2-2
4-3-3-1
4-3-4-1

4-3-4-3 Faulty motherboard or one of its components.
4-3-3-2

4-3-3-4 IRQ failure.
4-3-3-3

4-3-4-2 Floppy drive or hard drive failure

3-Beep Codes

Beep Code Meaning

1-1-2 Faulty CPU/motherboard.

1-1-3 Faulty motherboard/CMOS read-write failure.

1-1-4 Faulty BIOS/BIOS ROM checksum error.

1-2-1 System timer not operational. There is a problem with the timer(s) that control functions on the motherboard.
1-2-2

1-2-3 Faulty motherboard/DMA failure.

1-3-1 Memory refresh failure.
1-3-2
1-3-3

1-3-4 Failure in the first 64K of memory.

1-4-1 Address line failure.

1-4-2 Parity RAM failure.

1-4-3 Timer failure.

1-4-4 NMI port failure.

2-_-_ Any combination of beeps after 2 indicates a failure in the first 64K of memory.

3-1-1 Master DMA failure.

3-1-2 Slave DMA failure.
3-1-3

3-1-4 Interrupt controller failure.

3-2-4 Keyboard controller failure.
3-3-1

3-3-2 CMOS error.

3-3-4 Video card failure.

3-4-1 Video card failure.

4-2-1 Timer failure.

4-2-2 CMOS shutdown failure.

4-2-3 Gate A20 failure.

4-2-4 Unexpected interrupt in protected mode.

4-3-1 RAM test failure.

4-3-3 Timer failure.

4-3-4 Time of day clock failure.

4-4-1 Serial port failure.

4-4-2 Parallel port failure.

4-4-3 Math coprocessor

para di na tayo mangangapa pag nag bebeep ang mobo natin, best regards sana makatulong

KEYWORD = bios beep sound<br><br>Post edited by: cyberjames, at: 2007/07/19 11:16

LOW VOLTAGE..1 cause din na mag BEEPPPP!!!

malaking tulong to sa tin thanks cyberjames.

fluctuating current..not voltage

95% of the time, etong apat na lang na to ma-experience mo

1 beep - good
long continous beeps - memory problem
1 long 3 short beeps - video card
continous short beep - boot block


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please do not post just to insert an ad for your sites.<br><br>Post edited by: manoiskee, at: 2007/11/15 21:41

Good PM people. Ask ko lang ano ibig sabihin ng One beep code sa desktop na mismo? After na siya ng post, nasa windows na ako. Salamat. ^_^

nice info sir

Shawty25 wrote:

Good PM people. Ask ko lang ano ibig sabihin ng One beep code sa desktop na mismo? After na siya ng post, nasa windows na ako. Salamat. ^_^

parang naranasan ko na to. medyo na weirduhan din ako sa server ko nung ganyan. pinalitan ko PSU. nawala na yung beep sa windows.

napansin ko din na madalas mag hang pc ko kasi. kulang lang pala sa power.

Bien wrote:

Shawty25 wrote:

Good PM people. Ask ko lang ano ibig sabihin ng One beep code sa desktop na mismo? After na siya ng post, nasa windows na ako. Salamat. ^_^

parang naranasan ko na to. medyo na weirduhan din ako sa server ko nung ganyan. pinalitan ko PSU. nawala na yung beep sa windows.

napansin ko din na madalas mag hang pc ko kasi. kulang lang pala sa power.

Hindi naman parating nagbebeep sa akin. Kunyari sa isang linggo, twice ko maririnig yun beep code sa desktop mismo. Hindi din naman naghahang. Minsan nga naiisip ko baka normal lang talaga, minsan hinde ko lang naririnig sa dami ng mga nagdadaanang sasakyan dito. Minsan naiisip ko guni guni ko lang yun, haha, para hinde ako mapraning. ^_^

kung may UPS ka, baka naman low batt na at yun nagbi-beep. d kaya low batt na celphone? or naka login ka sa site ni sadistikal, lagi beep shout nun. wakokok