BIOS Beep Codes

AMI Beep Codes
Beeps____________Error message
1_______________ short System RAM refresh failure
2_______________ short Memory parity error
3_______________ short Base 64-kbytes memory failure
4_______________ short System timer failure
5_______________ short CPU failure
6_______________ short Gate A20 failure
7_______________ short Exception error
8_______________ short Video memory read/write error
9_______________ short ROM checksum error
10______________ short CMOS shutdown register read/write error
1_______________ long - 3 short Memory test failure
1_______________ long - 8 short Display test failure

Phoenix Beep and Post Codes for PhoenixBIOS 4.x
Beeps [POST] Error message
1-1-1-3 [02] Verify Real Mode
1-1-2-1 [04] Get CPU type
1-1-2-3 [06] Initialize system hardware
1-1-3-1 [08] Initialize chipset registers with initial POST values
1-1-3-2 [09] Set in POST flag
1-1-3-3 [0A] Initialize CPU registers
1-1-4-1 [0C] Initialize cache to initial POST values
1-1-4-3 [0E] Initialize I/O
1-2-1-1 [10] Initialize Power Management
1-2-1-2 [11] Load alternate registers with initial POST values
1-2-1-3 [12] Jump to UserPatch0
1-2-2-1 [14] Initialize keyboard controller
1-2-2-3 [16] BIOS ROM checksum
1-2-3-1 [18] 8254 timer initialization
1-2-3-3 [1A] 8237 DMA controller initialization
1-2-4-1 [1C] Reset Programmable Interrupt Controller
1-3-1-1 [20] Test DRAM refresh
1-3-1-3 [22] Test 8742 Keyboard Conroller
1-3-2-1 [24] Set ES segment to register to 4 GB
1-3-3-1 [28] Autosize DRAM
1-3-3-3 [2A] Clear 512K base RAM
1-3-4-1 [2C] Test 512 base address lines
1-3-4-3 [2E] Test 512K base memory
1-4-1-3 [32] Test CPU bus-clock frequency
1-4-2-4 [37] Reinitialize the chipset
1-4-3-1 [38] Shadow system BIOS ROM
1-4-3-2 [39] Reinitialize the cache
1-4-3-3 [3A] Autosize cache
1-4-4-1 [3C] Configure advanced chipset registers
1-4-4-2 [3D] Load alternate registers with CMOS values
2-1-1-1 [40] Set Initial CPU speed
2-1-1-3 [42] Initialize interrupt vectors
2-1-2-1 [44] Intialize BIOS interrrupts
2-1-2-3 [46] Check ROM copyright notice
2-1-2-4 [47] Initialize manager for PCI Options ROMs
2-1-3-1 [48] Check video configuration against CMOS
2-1-3-2 [49] Initialize PCI bus and devices
2-1-3-3 [4A] Initialize all video adapters in system
2-1-4-1 [4C] Shadow video BIOS ROM
2-1-4-3 [4E] Display copyright notice
2-2-1-1 [50] Display CPU type and speed
2-2-1-3 [52] Test keyboard
2-2-2-1 [54] Set key click if enabled
2-2-2-3 [56] Enable keyboard
2-2-3-1 [58] Test for unexpected interrupts
2-2-3-3 [5A] Display prompt "Press F2 to enter SETUP"
2-2-4-1 [5C] Test RAM between 512 and 640k
2-3-1-1 [60] Test expanded memory
2-3-1-3 [62] Test extended memory address lines
2-3-2-1 [64] Jump to UserPatch1
2-3-2-3 [66] Configure advanced cache registers
2-3-3-1 [68] Enable external and CPU caches
2-3-3-3 [6A] Display external cache size
2-3-4-1 [6C] Display shadow message
2-3-4-3 [6E] Display non-disposable segments
2-4-1-1 [70] Display error messages
2-4-1-3 [72] Check for configuration errors
2-4-2-1 [74] Test real-time clock
2-4-2-3 [76] Check for keyboard errors
2-4-4-1 [7C] Set up hardware interrupts vectors
2-4-4-3 [7E] Test coprocessor if present
3-1-1-1 [80] Disable onboard I/O ports
3-1-1-3 [82] Detect and install external RS232 ports
3-1-2-1 [84] Detect and install external parallel ports
3-1-2-3 [86] Re-initialize onboard I/O ports
3-1-3-1 [88] Initialize BIOS Data Area
3-1-3-3 [8A] Initialize Extended BIOS Data Area
3-1-4-1 [8C] Initialize floppy controller
3-2-1-1 [90] Initialize hard-disk controller
3-2-1-2 [91] Initialize local-bus hard-disk controller
3-2-1-3 [92] Jump to UserPatch2
3-2-2-1 [94] Disable A20 adress line
3-2-2-3 [96] Clear huge ES segment register
3-2-3-1 [98] Search for option ROMs
3-2-3-3 [9A] Shadow option ROMs
3-2-4-1 [9C] Set up Power Management
3-2-4-3 [9E] Enable hardware interrupts
3-3-1-1 [A0] Set time of day
3-3-1-3 [A2] Check key lock
3-3-3-1 [A8] Erase F2 prompt
3-3-3-3 [AA] Scan for F2 key stroke
3-3-4-1 [AC] Enter SETUP
3-3-4-3 [AE] Clear in-POST flag
3-4-1-1 [B0] Check for errors
3-4-1-3 [B2] POST done--prepare to boot operating system
3-4-2-1 [B4] One beep
3-4-2-3 [B6] Check password (optional)
3-4-3-1 [B8] Clear global descriptor table
3-4-4-1 [BC] Clear parity checkers
3-4-4-3 [BE] Clear screen (optional)
3-4-4-4 [BF] Check virus and backup reminders
4-1-1-1 [C0] Try to boot with INT 19
4-2-1-1 [D0] Interrupt handler error
4-2-1-3 [D2] Unknown interrupt error
4-2-2-1 [D4] Pending interrupt error
4-2-2-3 [D6] Initialize option ROM error
4-2-3-1 [D8] Shutdown error
4-2-3-3 [DA] Extended Block Move
4-2-4-1 [DC] Shutdown 10 error
4-3-1-3 [E2] Initialize the chipset
4-3-1-4 [E3] Initialize refresh counter
4-3-2-1 [E4] Check for Forced Flash
4-3-2-2 [E5] Check HW status of ROM
4-3-2-3 [E6] BIOS ROM is OK
4-3-2-4 [E7] Do a complete RAM test
4-3-3-1 [E8] Do OEM initialization
4-3-3-2 [E9] Initialize interrupt controller
4-3-3-3 [EA] Read in bootstrap code
4-3-3-4 [EB] Initialize all vectors
4-3-4-1 [EC] Boot the Flash program
4-3-4-2 [ED] Initialize the boot device
4-3-4-3 [EE] Boot code was read OK

Phoenix Beep Codes - ISA/MCA/EISA BIOS
Beeps......Error message
1-1-2......CPU register test failure
Low 1-1-2..System board select failure
1-1-3......CMOS read/write failure
Low 1-1-3..Extended CMOS RAM failure
1-1-4......BIOS ROM checksum error
1-2-1......Programmable interval timer (PIT) failure
1-2-2......DMA initialization failure
1-2-3......DMA page register read/write failure
1-3-1......RAM refresh failure
1-3-2......64-kbyte RAM test disabled
1-3-3......First 64-kbytes RAM IC or data line failure
1-3-4......First 64-kbytes odd/even logic failure
1-4-1......Address line failure, 64 kbytes of RAM
1-4-2......Parity failure, first 64 kbytes of RAM
1-4-3......EISA failsafe timer test fault
1-4-4......EISA NMI port 462 test failure
2-1-1......Bit 0 first 64 kbytes RAM failure
2-1-2......Bit 1 first 64 kbytes RAM failure
2-1-3......Bit 2 first 64 kbytes RAM failure
2-1-4......Bit 3 first 64 kbytes RAM failure
2-2-1......Bit 4 first 64 kbytes RAM failure
2-2-2......Bit 5 first 64 kbytes RAM failure
2-2-3......Bit 6 first 64 kbytes RAM failure
2-2-4......Bit 7 first 64 kbytes RAM failure
2-3-1......Bit 8 first 64 kbytes RAM failure
2-3-2......Bit 9 first 64 kbytes RAM failure
2-3-3......Bit 10 first 64 kbytes RAM failure
2-3-4......Bit 11 first 64 kbytes RAM failure
2-4-1......Bit 12 first 64 kbytes RAM failure
2-4-2......Bit 13 first 64 kbytes RAM failure
2-4-3......Bit 14 first 64 kbytes RAM failure
2-4-4......Bit 15 first 64 kbytes RAM failure
3-1-1......Slave DMA register failure
3-1-2......Master DMA register failure
3-1-3......Master interrupt mask register failure
3-1-4......Slave interrupt mask register failure
3-2-2......Interrupt vector loading error
3-2-3......Reserved
3-2-4......Keyboard controller test failure
3-3-1......CMOS RAM power bad
3-3-2......CMOS configuration error
3-3-3......Reserved
3-3-4......Video memory test failed
3-4-1......Video initialization test failure
4-2-1......Timer tick failure
4-2-2......Shutdown test failure
4-2-3......Gate A20 failure
4-2-4......Unexpected interrupt in protected mode
4-3-1......RAM test address failure
4-3-3......Interval timer channel 2 failure
4-3-4......Time-of-day clock failure
4-4-1......Serial-port test failure
4-4-2......Parallel-port test failure
4-4-3......Math coprocessor failure