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 cheeksum error
      • 10 short  CMOS shutdown register read/write error
      • 1 long – 3 short Memory test failure
      • 1 long – 8 short Display test failure

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PhoenixBIOS 4.x Beep and Post Codes

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

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Phoenix Beep Codes for 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 cheeksum 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

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AST Beep Codes

Beeps – Error message

      • 1 short   CPU register test failure
      • 2 short   Keyboard controller buffer failure
      • 3 short   Keyboard controller reset failure
      • 4 short   Keyboard communication failure
      • 5 short   Keyboard input port failure
      • 6 short   System board chipset initialization failure
      • 9 short   BIOS ROM cheeksum error
      • 10 short  System timer test failure
      • 11 short  ASIC register test failure
      • 12 short  CMOS RAM shutdown register failure
      • 1 long   DMA controller 0 failure
      • 1 long – 1 short DMA controller 1 failure
      • 1 long – 2 short Video vertical retrace failure
      • 1 long – 3 short Video memory test failure
      • 1 long – 4 short Video adapter test failure
      • 1 long – 5 short 64 kbytes base memory failure
      • 1 long – 6 short Unable to load interrupt vectors
      • 1 long – 7 short Unable to initialize video system
      • 1 long – 8 short Video memory failure

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Compaq Beep Codes

Beeps – Error message

      • 1 short   No error
      • 1 long – 1 short BIOS ROM cheeksum error
      • 2 short   General error
      • 1 long – 2 short Video adapter error

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IBM Beep Codes

Beeps – Error message

      • 1 short   Start of test
      • 2 short   Initialization error
      • 1 long – 1 short System board error
      • 1 long – 2 short Video adapter error
      • 1 long – 3 short EGA/VGA adapter error
      • 3 long   Keyboard adapter error 999 short  Power supply or system board error
      • None   Power supply or system board error

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Quadtel Beep Codes

Beeps – Error message

      • 1 short   Start of test
      • 2 short   CMOS IC error
      • 1 long – 2 short Video controller error
      • 1 long > 2 short Peripheral controller error

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Mr. BIOS Beep Codes

      • low high, low low low     ROM BIOS Checksum Test
      • low high, high low low    Page Register Test (Ports 81-8F)
      • low high, low high low    8042 Keyboard Controller Selftest
      • low high, high high low    Memory Refresh Circuit Test
      • low high, low low high   Master (16bit) DMA Controller Failure
      • low high, high low high    Slave (8 bit) DMA Controller Failure
      • low high, low low low low   Memory Bank 0 Pattern Test Failure
      • low high, high low low low   Memory Bank 0 Parity Circuitry Failure
      • low high, low high low low   Memory Bank 0 Parity Error
      • low high, high high low low   Memory Bank 0 Data Bus Failure
      • low high, low low high low   Memory Bank 0 Address Bus Failure
      • low high, high low high low   Memory Bank 0 Block Access Read Failure
      • low high, low high high low   Memory Bank 0 Block Access Read/Write Failure
      • low high, high high high low   Master 8259 (Port 21 ) Failure
      • low high, low low low high   Slave 8259 (Port A1) Failure
      • low high, high low low high   Master 8259 (Port 20) Interrupt Address Error
      • low high, low high low high   Slave 8259 (Port A0) Interrupt Address Error
      • low high, high high low low   8259 (Port 20/A0) Interrupt Address Error
      • low high, low low high high   Master 8259 (Port 20) Stuck Intercept Error
      • low high, high low high high   Slave 8259 (Port A0) Stuck Intercept Error
      • low high, low high high high   System Timer 8254 CH0/IRQ0 Interrupt Failure
      • low high, high high high high   8254 Channel 0 Test and Initialization
      • low high, low low low low high   8254 Channel-2 (Speaker) Failure
      • low high, high low low low high  8254 OUT2 (Speaker Detect) Failure
      • low high, low high low low high  CMOS RAM Read/Write Test Failure
      • low high, high high low low high RTC Periodic Interrupt / IRQ8 Failure
      • low high, low low high low high  Video Initialization and (Cold-Boot) Sign on Message
      • low high, high low high low high Keyboard Controller Failure
      • low high, low low low high high  A20 Test Failure Due to 8042 Timeout
      • low high, high low low high high A20 Gate Stuck in Disabled State
      • low high, low high high low high   Memory Parity Error
      • low high, high high high low high  IO Channel Error
      • low high, low high low high high  Real Time Clock is Not Updating

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Mylex and Eurosoft Beep Codes

Beeps – Error message

      • 1   Start of test
      • 2   Video adapter error
      • 3   Keyboard controller error
      • 4   Keyboard error
      • 5   PIC 0 error
      • 6   PIC 1 error
      • 7   DMA page register error
      • 8   RAM refresh error
      • 9   RAM data error
      • 10   RAM parity error
      • 11   DMA controller 0 error
      • 12   CMOS RAM error
      • 13   DMA controller 1 error
      • 14   CMOS RAM battery error
      • 15   CMOS RAM cheeksum error
      • 16   BIOS ROM cheeksum error

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Mylex 386 Beep Codes – Beeps – Error message

      • 1 long    Start of test
      • 2 long    Video adapter fault (or adapter missing)
      • 1 long – 1 short – 1 long  Keyboard controller error
      • 1 long – 2 short – 1 long  Keyboard error
      • 1 long – 3 short – 1 long  PIC 0 error
      • 1 long – 4 short – 1 long  PIC 1 error
      • 1 long – 5 short – 1 long  DMA page register error
      • 1 long – 6 short – 1 long  RAM refresh error
      • 1 long – 7 short – 1 long  RAM data test error
      • 1 long – 8 short – 1 long  RAM parity error
      • 1 long – 9 short – 1 long  DAM controller 1 error
      • 1 long – 10 short – 1 long  CMOS RAM failure
      • 1 long – 11 short – 1 long  DMA controller 2 error
      • 1 long – 12 short – 1 long  CMOS RAM battery failure
      • 1 long – 13 short – 1 long  CMOS cheeksum failure
      • 1 long – 14 short – 1 long  BIOS ROM cheeksum failure
      • >1 long    Multiple faults detected

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Tandon Beep Codes – Beeps – Error message

      • long – short – long – short  8524 counter timer failure
      • short – long – short   RAM refresh failure
      • long – long – long   System RAM failure
      • short – short – short   BIOS RAM checksum failure
      • long – long    No video adapter is installed
      • long – long – long – long  Video adapter failure

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