The following are AMI BIOS Beep Codes that can occur. However because of the wide variety of different computer manufacturers with this BIOS the beep codes may vary.
| Beep Code | Descriptions |
| 1 short | DRAM refresh failure |
| 2 short | Parity circuit failure |
| 3 short | Base 64K RAM failure |
| 4 short | System timer failure |
| 5 short | Process failure |
| 6 short | Keyboard controller Gate A20 error |
| 7 short | Virtual mode exception error |
| 8 short | Display memory Read/Write test failure |
| 9 short | ROM BIOS checksum failure |
| 10 short | CMOS shutdown Read/Write error |
| 11 short | Cache Memory error |
| 1 long, 3 short | Conventional/Extended memory failure |
| 1 long, 8 short | Display/Retrace test failed |
The following are Award BIOS Beep Codes that can occur. However because of the wide variety of different computer manufacturers with this BIOS the beep codes may vary.
| Beep Code | Description |
| 1 long, 2 short | Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information |
| Any other beep(s) | RAM problem. |
If any other correctable hardware issues the BIOS will display a message.
The following are IBM BIOS Beep Codes that can occur. However because of the wide variety of models shipping with this BIOS the beep codes may vary.
| Beep Code | Description |
| No Beeps | No Power, Loose Card, or Short. |
| 1 Short Beep | Normal POST, computer is ok. |
| 2 Short Beep | POST error, review screen for error code. |
| Continuous Beep | No Power, Loose Card, or Short. |
| Repeating Short Beep | No Power, Loose Card, or Short. |
| One Long and one Short Beep | Motherboard issue. |
| One Long and Two short Beeps | Video (Mono/CGA Display Circuitry) issue. |
| One Long and Three Short Beeps. | Video (EGA) Display Circuitry. |
| Three Long Beeps | Keyboard / Keyboard card error. |
| One Beep, Blank or Incorrect Display | Video Display Circuitry. |
| TONES | ERROR |
| Error Tone. (two sets of different tones) | Problem with logic board or SCSI 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. |
The following is for PHOENIX BIOS Q3.07 OR 4.X
| Beep Code | Description / What to Check |
| 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 register to 4 GB. |
| 1-3-3-1 | 28 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 the chipset. |
| 1-4-3-1 | Shadow system BIOS ROM. |
| 1-4-3-2 | Reinitialize the 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 in system. |
| 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 | 56 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 640k. |
| 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 key stroke. |
| 3-3-4-1 | Enter 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 the 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 | Do a complete RAM test. |
| 4-3-3-1 | Do OEM initialization. |
| 4-3-3-2 | Initialize interrupt controller. |
| 4-3-3-3 | Read in 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. |