Universal motherboard internal speaker, commonly used for PC bios beep code diagnostics (2 Pack).
The computer POST (power-on self-test) checks a computer's internal hardware for compatibility and connection before starting the remainder of the boot process.
If the computer passes the POST, the computer may give a single beep (some computers may beep twice) as it starts and continues to boot.
However, if the computer fails the POST, the computer doesn't beep or generates a beep code telling the user the source of the problem.
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Below are the AMI BIOS beep codes. However, due to the wide variety of computer manufacturers using this BIOS, the beep codes for your specific computer may differ slightly.
| Beep Code | Description |
|---|---|
| 1 short beep | DRAM (dynamic random access memory) refresh failure. |
| 2 short beeps | Parity circuit failure. |
| 3 short beeps | Base 64K RAM failure. |
| 4 short beeps | System timer failure. |
| 5 short beeps | Processor failure. |
| 6 short beeps | Keyboard controller Gate A20 error. |
| 7 short beeps | Virtual mode exception error. |
| 8 short beeps | Display memory Read/Write test failure. |
| 9 short beeps | ROM BIOS checksum failure. |
| 10 short beeps | CMOS battery replacement required. |
| 11 short beeps | Cache memory error. |
| 1 long, 2 short beeps | Video card memory issue. |
| 1 long, 3 short beeps | Conventional/Extended memory failure. |
| 1 long, 8 short beeps | Display/Retrace test failed. |
| Two-tone siren | Low CPU fan speed, voltage level issue. |
Below are the Award BIOS beep codes. However, due to the wide variety of computer manufacturers using this BIOS, the beep codes may vary.
| Beep Code | Description |
|---|---|
| 1 long, 2 short beeps | Video error has occurred; BIOS cannot initialize the video screen. |
| 1 long, 3 short beeps | Video card not detected (reseat or replace video card). |
| Beeps repeating endlessly | RAM problem. |
| Repeated high-frequency beeps while PC is running | Overheating processor (CPU). |
| Repeated beeps alternating high & low frequency | Processor (CPU) issue, possibly damaged. |
| Beep Code | Description |
|---|---|
| 1 beep | BIOS ROM corruption or failure. |
| 2 beeps | Memory (RAM) not detected. |
| 3 beeps | Motherboard failure. |
| 4 beeps | Memory (RAM) failure. |
| 5 beeps | CMOS battery failure. |
| 6 beeps | Video card failure. |
| 7 beeps | Bad processor (CPU). |
Below are general IBM BIOS beep codes. However, due to the variety of models, the beep codes may vary.
| Beep Code | Description |
|---|---|
| No beeps | Computer won't turn on. |
| 1 short beep | Normal POST, computer is OK. |
| 2 short beeps | POST error, check screen for error code. |
| Continuous beep | No power, loose card, or short. |
| Repeating short beeps | No power, loose card, or short. |
| 1 long, 1 short beep | Motherboard issue. |
| 1 long, 2 short beeps | Video (Mono/CGA display) issue. |
| 1 long, 3 short beeps | Video (EGA display) issue. |
| 3 long beeps | Keyboard or keyboard card error. |
| 1 beep, blank or incorrect display | Video display circuitry issue. |
| Beep Code | Description |
|---|---|
| 5 short, 1 long beep | Problem with DMA page registers. |
| 4 short, 1 long, 1 short beep | RAM refresh circuit failure. |
| 4 short, 2 short beeps | BIOS ROM checksum failure. |
| 3 short, 1 long, 2 short beeps | CMOS RAM test failure. |
| 3 short, 1 long, 1 short, 1 long beep | DMA controller failure. |
| 3 short, 2 long, 1 short beep | Interrupt controller failure. |
| 3 short, 3 long beeps | Keyboard self-test issue. |
| 2 short, 1 long, 3 short beeps | Video card not found. |
| 2 short, 1 long, 2 short, 1 long beep | No RAM installed or RAM not recognized. |
| Tone | Error |
|---|---|
| Error tone (two sets of different tones) | Problem with logic board or SCSI (small computer system interface) bus. |
| Startup tone, drive spins, no video | Problem with video controller. |
| Powers on, no tone | Logic board problem. |
| High tone, four higher tones | Problem with SIMM (single inline memory module). |
Below are the beep codes for Phoenix BIOS Q3.07 or 4.x.
| Beep Code | Description |
|---|---|
| 1-1-1-1 | Unconfirmed beep code. Reseat RAM or replace it as possible solution. |
| 1-1-1-3 | Verify real mode. |
| 1-1-2-1 | Get CPU type. |
| 1-1-2-3 | Initialize system hardware. |
| 1-1-3-1 | Initialize chipset registers with initial POST values. |
| 1-1-3-2 | Set in POST flag. |
| 1-1-3-3 | Initialize CPU registers. |
| 1-1-4-1 | Initialize cache to initial POST values. |
| 1-1-4-3 | Initialize I/O. |
| 1-2-1-1 | Initialize power management. |
| 1-2-1-2 | Load alternate registers with initial POST values. |
| 1-2-1-3 | Jump to UserPatch0. |
| 1-2-2-1 | Initialize keyboard controller. |
| 1-2-2-3 | BIOS ROM checksum. |
| 1-2-3-1 | 8254 timer initialization. |
| 1-2-3-3 | 8237 DMA controller initialization. |
| 1-2-4-1 | Reset programmable interrupt controller. |
| 1-3-1-1 | Test DRAM refresh. |
| 1-3-1-3 | Test 8742 keyboard controller. |
| 1-3-2-1 | Set ES segment to 4 GB. |
| 1-3-3-1 | Autosize DRAM. |
| 1-3-3-3 | Clear 512K base RAM. |
| 1-3-4-1 | Test 512 base address lines. |
| 1-3-4-3 | Test 512K base memory. |
| 1-4-1-3 | Test CPU bus clock frequency. |
| 1-4-2-4 | Reinitialize chipset. |
| 1-4-3-1 | Shadow system BIOS ROM. |
| 1-4-3-2 | Reinitialize cache. |
| 1-4-3-3 | Autosize cache. |
| 1-4-4-1 | Configure advanced chipset registers. |
| 1-4-4-2 | Load alternate registers with CMOS values. |
| 2-1-1-1 | Set initial CPU speed. |
| 2-1-1-3 | Initialize interrupt vectors. |
| 2-1-2-1 | Initialize BIOS interrupts. |
| 2-1-2-3 | Check ROM Copyright notice. |
| 2-1-2-4 | Initialize manager for PCI options ROMs. |
| 2-1-3-1 | Check video configuration against CMOS. |
| 2-1-3-2 | Initialize PCI bus and devices. |
| 2-1-3-3 | Initialize all video adapters. |
| 2-1-4-1 | Shadow video BIOS ROM. |
| 2-1-4-3 | Display Copyright notice. |
| 2-2-1-1 | Display CPU type and speed. |
| 2-2-1-3 | Test keyboard. |
| 2-2-2-1 | Set key click if enabled. |
| 2-2-2-3 | Enable keyboard. |
| 2-2-3-1 | Test for unexpected interrupts. |
| 2-2-3-3 | Display prompt Press F2 to enter SETUP. |
| 2-2-4-1 | Test RAM between 512 and 640 KB. |
| 2-3-1-1 | Test expanded memory. |
| 2-3-1-3 | Test extended memory address lines. |
| 2-3-2-1 | Jump to UserPatch1. |
| 2-3-2-3 | Configure advanced cache registers. |
| 2-3-3-1 | Enable external and CPU caches. |
| 2-3-3-3 | Display external cache size. |
| 2-3-4-1 | Display shadow message. |
| 2-3-4-3 | Display non-disposable segments. |
| 2-4-1-1 | Display error messages. |
| 2-4-1-3 | Check for configuration errors. |
| 2-4-2-1 | Test real-time clock. |
| 2-4-2-3 | Check for keyboard errors. |
| 2-4-4-1 | Set up hardware interrupts vectors. |
| 2-4-4-3 | Test coprocessor if present. |
| 3-1-1-1 | Disable onboard I/O ports. |
| 3-1-1-3 | Detect and install external RS232 ports. |
| 3-1-2-1 | Detect and install external parallel ports. |
| 3-1-2-3 | Re-initialize onboard I/O ports. |
| 3-1-3-1 | Initialize BIOS data area. |
| 3-1-3-3 | Initialize extended BIOS data area. |
| 3-1-4-1 | Initialize floppy controller. |
| 3-2-1-1 | Initialize hard disk controller. |
| 3-2-1-2 | Initialize local bus hard disk controller. |
| 3-2-1-3 | Jump to UserPatch2. |
| 3-2-2-1 | Disable A20 address line. |
| 3-2-2-3 | Clear huge ES segment register. |
| 3-2-3-1 | Search for option ROMs. |
| 3-2-3-3 | Shadow option ROMs. |
| 3-2-4-1 | Set up Power Management. |
| 3-2-4-3 | Enable hardware interrupts. |
| 3-3-1-1 | Set time of day. |
| 3-3-1-3 | Check key lock. |
| 3-3-3-1 | Erase F2 prompt. |
| 3-3-3-3 | Scan for F2 keystroke. |
| 3-3-4-1 | Enter CMOS setup. |
| 3-3-4-3 | Clear in POST flag. |
| 3-4-1-1 | Check for errors. |
| 3-4-1-3 | POST done, prepare to boot operating system. |
| 3-4-2-1 | One beep. |
| 3-4-2-3 | Check password (optional). |
| 3-4-3-1 | Clear global descriptor table. |
| 3-4-4-1 | Clear parity checkers. |
| 3-4-4-3 | Clear screen (optional). |
| 3-4-4-4 | Check virus and backup reminders. |
| 4-1-1-1 | Try to boot with INT 19. |
| 4-2-1-1 | Interrupt handler error. |
| 4-2-1-3 | Unknown interrupt error. |
| 4-2-2-1 | Pending interrupt error. |
| 4-2-2-3 | Initialize option ROM error. |
| 4-2-3-1 | Shutdown error. |
| 4-2-3-3 | Extended block move. |
| 4-2-4-1 | Shutdown 10 error. |
| 4-3-1-3 | Initialize chipset. |
| 4-3-1-4 | Initialize refresh counter. |
| 4-3-2-1 | Check for forced flash. |
| 4-3-2-2 | Check HW status of ROM. |
| 4-3-2-3 | BIOS ROM is OK. |
| 4-3-2-4 | Complete RAM test. |
| 4-3-3-1 | OEM initialization. |
| 4-3-3-2 | Initialize interrupt controller. |
| 4-3-3-3 | Read bootstrap code. |
| 4-3-3-4 | Initialize all vectors. |
| 4-3-4-1 | Boot the flash program. |
| 4-3-4-2 | Initialize the boot device. |
| 4-3-4-3 | Boot code was read OK. |
| Two-tone siren | Low CPU fan speed, voltage level issue. |
