Beep Codes

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AMI Beep Codes Phoenix Beep and Post Codes for PhoenixBIOS 4.x Phoenix Beep Codes for ISA/MCA/EISA BIOS AST Beep Codes Compaq Beep Codes IBM Beep Codes	Quadtel Beep Codes Mr. Bios Beep Codes Mylex and Eurosoft Beep Codes Mylex 386 Beep Codes Tandon 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 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 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

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 checksum 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

Compaq Beep Codes

Beeps	Error message
1 short	No error
1 long - 1 short	BIOS ROM checksum error
2 short	General error
1 long - 2 short	Video adapter error

IBM Beep Codes

Beeps	Error message
l 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

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

Mr. BIOS Beep Codes

Beeps	Error message
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

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 checksum error
16	BIOS ROM checksum error

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 checksum failure
1 long - 14 short - 1 long	BIOS ROM checksum failure
>1 long	Multiple faults detected

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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