Calculator Mail and beep codes


Reckoner Promise

The reckoner POST (power-on cocky-examination) checks a computer’s internal hardware for compatibility and connection before starting the residue of the boot process. If the computer passes the Mail service, the computer may give a unmarried beep (some computers may beep twice) equally information technology starts and continues to boot. Still, if the computer fails the POST, the computer may generate a beep code telling the user the source of the problem.

The most common causes of Mail failures are bug with the following components.

  • CPU (processor)
  • Motherboard
  • RAM (memory)
  • Video bill of fare

If your computer has an irregular Postal service or a beep code not mentioned below, follow the
POST troubleshooting steps
to determine the declining hardware component.


Except for Dell and Mac, your reckoner or motherboard manufacturer is not the BIOS manufacturer. Determine the BIOS manufacturer for your computer’due south motherboard, then select the appropriate link below for beep lawmaking meanings.

AMI BIOS beep codes

Below are the AMI BIOS beep codes. All the same, because of the wide variety of unlike estimator manufacturers with this BIOS, the beep codes for your computer may differ slightly from those listed below.

Beep Code Descriptions
1 brusk beep DRAM refresh failure.
2 brusk beep Parity circuit failure.
3 short beep Base of operations 64 Thousand RAM failure.
4 short beep System timer failure.
5 short beep Procedure failure.
6 short beep Keyboard controller Gate A20 fault.
7 short beep Virtual mode exception error.
eight short beep Display memory Read/Write test failure.
9 short beep ROM BIOS checksum failure.
10 short beep How to supervene upon the CMOS battery.
xi curt beep Cache memory fault.
i long, ii short beeps. Video menu retentivity outcome.
1 long, iii brusque beeps. Conventional/Extended memory failure.
i long, viii curt beeps. Display/Retrace examination failed.
Two-tone siren Low CPU fan speed, voltage level issue.

Award BIOS beep codes

Beneath are the Award BIOS beep codes. However, because of the wide variety of different estimator manufacturers with this BIOS, the beep codes may vary.

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Beep Code Description
one long, 2 short beeps. Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional data.
1 long, 3 brusque beeps. Video card non detected (reseat video card) or bad video card.
Beeps repeating endlessly. RAM problem.
Repeated high frequency beeps while PC is running. Overheating processor (CPU).
Repeated beeps alternating high & depression frequency. Issue with the processor (CPU), possibly damaged.

If any other correctable hardware issues are found, the BIOS displays a bulletin.

Dell beep codes

Beep Code Description
ane beep BIOS ROM corruption or failure.
2 beeps Memory (RAM) not detected.
iii beeps Motherboard failure.
four beeps Retentiveness (RAM) failure.
5 beeps CMOS bombardment failure.
six beeps Video bill of fare failure.
7 beeps Bad processor (CPU).

For other Dell beep codes, please refer to Dell’s beep codes and PSA diagnostics nautical chart page.

IBM BIOS beep codes

Below are full general IBM BIOS beep codes. Nevertheless, because of the wide variety of models shipping with this BIOS, the beep codes may vary.

Beep Code Description
No beeps Why won’t my calculator plow on?
1 curt beep Normal Mail, computer is ok.
ii short beep Mail service error, review screen for error code.
Continuous beep No ability, loose card, or short.
Repeating short beep No power, loose card, or short.
i long, 1 short beep Motherboard consequence.
one long, 2 brusque beeps Video (Mono/CGA display circuitry) issue.
one long, 3 short beeps. Video (EGA) display circuitry.
3 long beeps Keyboard or keyboard card error.
i beep, blank or incorrect display. Video display circuitry.

Insyde beep codes

Beep Code Description
5 short and 1 long beep. Problem with the DMA page registers.
four short, 1 long, 1 short beep. Circuit for refreshing RAM not working.
4 short and 2 short beeps. BIOS ROM checksum failure.
3 short, 1 long, ii short beeps. CMOS RAM exam failure.
three short, ane long, one brusque, 1 long beep. DMA controller failure.
three brusk, 2 long, 1 brusk beep. Interrupt controller failure.
three short and 3 long beeps. Keyboard self-test issue.
two short, 1 long, 3 short beeps. Video card not establish.
2 brusque, 1 long, 2 short, 1 long beep. No RAM installed or RAM not recognized.
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Macintosh startup tones

Tones Error
Error tone. (two sets of unlike tones). Problem with logic board or SCSI omnibus.
Startup tone, drive spins, no video. Problem with video controller.
Powers on, no tone. Logic board problem.
High tone, four higher tones. Trouble with SIMM.

Phoenix BIOS beep codes

Below are the beep codes for Phoenix BIOS Q3.07 or iv.x.

Beep Code Description and what to cheque
1-1-one-one Unconfirmed beep lawmaking. Reseat RAM fries or replace RAM fries equally possible solution.
1-one-1-3 Verify real way.
ane-ane-2-i Go CPU blazon.
1-1-2-three Initialize system hardware.
ane-1-iii-1 Initialize chipset registers with initial POST values.
one-1-3-ii Set in Mail flag.
1-1-iii-3 Initialize CPU registers.
i-ane-4-1 Initialize cache to initial Mail service values.
ane-1-4-3 Initialize I/O.
1-two-i-1 Initialize power management.
1-2-1-2 Load alternate registers with initial POST values.
1-2-ane-3 Jump to UserPatch0.
one-2-2-1 Initialize keyboard controller.
one-2-ii-3 BIOS ROM checksum.
1-2-iii-one 8254 timer initialization.
one-2-iii-3 8237 DMA controller initialization.
1-2-4-1 Reset programmable interrupt controller.
1-3-ane-1 Exam DRAM refresh.
1-3-1-3 Exam 8742 keyboard controller.
1-three-2-1 Set up ES segment to register to iv GB.
1-3-three-1 Autosize DRAM.
1-three-3-3 Clear 512 K base of operations RAM.
i-iii-4-i Examination 512 base of operations address lines.
1-3-iv-3 Test 512 Yard base of operations retentivity
1-4-1-3 Test CPU bus clock frequency.
1-four-2-iv Reinitialize the chipset.
one-iv-three-one Shadow system BIOS ROM.
1-4-three-2 Reinitialize the cache.
1-4-3-iii Autosize cache.
1-4-4-1 Configure advanced chipset registers.
one-iv-4-2 Load alternate registers with CMOS values.
ii-1-1-1 Set initial CPU speed.
2-i-i-3 Initialize interrupt vectors.
2-1-2-ane Initialize BIOS interrupts.
2-1-2-3 Cheque ROM Copyright notice.
2-1-2-4 Initialize managing director for PCI options ROMs.
two-ane-3-1 Check video configuration against CMOS.
2-ane-3-two Initialize PCI motorcoach and devices.
2-1-iii-three Initialize all video adapters in organization.
2-1-4-one Shadow video BIOS ROM.
2-1-4-iii Display Copyright discover.
2-2-i-one Display CPU type and speed.
ii-2-1-iii Examination keyboard.
2-2-ii-1 Set up fundamental click if enabled.
2-2-2-3 Enable keyboard.
ii-2-3-1 Test for unexpected interrupts.
ii-2-iii-3 Display prompt
Press F2 to enter SETUP.
2-2-4-1 Exam RAM between 512 and 640 yard.
2-3-one-1 Examination expanded memory.
two-iii-1-3 Examination extended memory address lines.
2-3-ii-1 Jump to UserPatch1.
2-iii-ii-3 Configure advanced cache registers.
2-3-3-1 Enable external and CPU caches.
2-3-3-3 Display external cache size.
2-3-4-ane Display shadow message.
2-3-4-3 Display not-dispensable segments.
2-4-i-one Display error messages.
two-4-1-3 Check for configuration errors.
ii-4-2-one Test real-time clock.
two-4-ii-3 Check for keyboard errors.
2-4-4-ane Set hardware interrupts vectors.
ii-4-iv-3 Exam coprocessor if nowadays.
three-1-one-1 Disable onboard I/O ports.
three-1-1-3 Detect and install external RS232 ports.
3-1-two-1 Notice and install external parallel ports.
3-1-2-3 Re-initialize onboard I/O ports.
3-1-3-1 Initialize BIOS data expanse.
3-1-3-iii Initialize extended BIOS data expanse.
3-i-4-1 Initialize floppy controller.
3-2-i-i Initialize difficult deejay controller.
3-2-1-2 Initialize local bus hard deejay controller.
3-2-ane-3 Spring to UserPatch2.
three-2-2-1 Disable A20 address line.
3-2-2-iii Clear huge ES segment register.
three-ii-3-1 Search for pick ROMs.
3-ii-3-iii Shadow option ROMs.
3-two-iv-1 Set upwardly Power Direction.
three-2-4-iii Enable hardware interrupts.
iii-3-one-one Set fourth dimension of day.
3-3-1-iii Check fundamental lock.
3-3-3-1 Erase F2 prompt.
three-three-3-3 Browse for F2 key stroke.
3-3-4-1 Enter CMOS setup.
3-3-4-iii Clear in Mail service flag.
3-4-i-i Check for errors
3-4-1-3 POST done, set to boot operating organization.
3-four-2-i One beep.
3-iv-2-3 Cheque password (optional).
three-four-3-i Clear global descriptor table.
iii-4-iv-1 Clear parity checkers.
3-4-4-3 Clear screen (optional).
3-4-4-four Bank check virus and backup reminders.
four-one-one-one Try to boot with INT 19.
4-2-1-1 Interrupt handler error.
4-ii-one-three Unknown interrupt mistake.
4-two-2-1 Awaiting interrupt fault.
4-2-2-3 Initialize option ROM error.
iv-two-three-1 Shutdown error.
iv-2-iii-3 Extended cake move.
4-2-four-one Shutdown x mistake.
4-3-i-3 Initialize the chipset.
4-3-1-4 Initialize refresh counter.
4-3-2-i Bank check for forced flash.
4-3-2-2 Check HW status of ROM.
four-3-2-3 BIOS ROM is OK.
four-three-2-four Do a complete RAM examination.
iv-3-3-ane Do OEM initialization.
four-iii-three-two Initialize interrupt controller.
4-3-3-3 Read in bootstrap code.
4-3-3-4 Initialize all vectors.
4-3-four-1 Kicking the flash program.
four-three-4-2 Initialize the boot device.
4-3-4-iii Boot lawmaking was read OK.
Two-tone siren Depression CPU fan speed, voltage level issue.
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