3 short beeps 1 long beep


The computer system POST (power-on self-test) checks a computer"s internal hardware for compatibility and also connection before starting the remainder of the boot procedure. If the computer system passes the POST, the computer might provide a solitary beep (some computers may beep twice) as it starts and also continues to boot. However, if the computer fails the POST, the computer doesn"t beep or generates a beep code informing the user the resource of the trouble.

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If your computer has actually an irregular POST or a beep code not pointed out below, follow the POST troubleshooting steps to determine the failing hardware component.

AMI BIOS beep codes

Below are the AMI BIOS beep codes. However, because of the wide variety of various computer system manufacturers with this BIOS, the beep codes may differ.

Beep CodeDescriptions
1 shortDRAM refresh faitempt.
2 shortParity circuit faiattract.
3 shortBase 64 K RAM faientice.
4 shortSystem timer faiattract.
5 shortProcess faitempt.
6 shortKeyboard controller Gate A20 error.
7 shortVirtual mode exemption error.
8 shortDisplay memory Read/Write test faientice.
9 shortROM BIOS checkamount failure.
10 shortHow to relocation the CMOS battery.
11 shortCache memory error.
1 long, 3 shortConventional/Extfinished memory faiattract.
1 long, 8 shortDisplay/Retrace test failed.
Two-tone sirenLow CPU fan speed, voltage level issue.

Award BIOS beep codes

Below are Award BIOS beep codes. However before, because of the wide array of various computer manufacturers with this BIOS, the beep codes might differ.

Beep CodeDescription
1 lengthy, 2 shortIndicates a video error has developed and the BIOS cannot initialize the video screen to screen any kind of extra indevelopment.
1 long, 3 shortVideo card not 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 & low frequency.Issue with the processor (CPU), probably damaged.

If any type of various other correctable hardware concerns are discovered, the BIOS display screens a message.

Dell beep codes

Beep CodeDescription
1 beepBIOS ROM corruption or faitempt.

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2 beepsMemory (RAM) not detected.
3 beepsMotherboard failure.
4 beepsMemory (RAM) faitempt.
5 beepsCMOS battery faitempt.
6 beepsVideo card failure.
7 beepsBad processor (CPU).

For other Dell beep codes, please describe Dell"s beep codes and also PSA diagnostics chart web page.

IBM BIOS beep codes

Below are general IBM BIOS beep codes. However before, because of the wide variety of models shipping through this BIOS, the beep codes may differ.

Beep CodeDescription
No beepsWhy will not my computer rotate on?
1 short beepTypical POST, computer is ok.
2 brief beepPOST error, testimonial screen for error code.
Continuous beepNo power, loose card, or short.
Repeating brief beepNo power, loose card, or short.
1 lengthy and also 1 short beepMotherboard problem.
1 long and also 2 brief beepsVideo (Mono/CGA screen circuitry) issue.
1 lengthy and also 3 short beeps.Video (EGA) display circuitry.
3 lengthy beepsKeyboard or key-board card error.
1 beep, blank or incorrect display.Video display circuitry.

Macintosh startup tones

Error tone. (two sets of various tones).Problem via logic board or SCSI bus.
Startup tone, drive spins, no video.Problem via video controller.
Powers on, no tone.Logic board problem.
High tone, four greater tones.Problem through SIMM.

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Phoenix BIOS beep codes

Below are the beep codes for Phoenix BIOS Q3.07 or 4.x.