POST коды

Анализ ошибок компьютера диагностической картой (POST-карта)

Введение

Карта называется POST (Power On Self Test - карта самотестирования). Отображает коды ошибок, при невозможности загрузки операционной системы или нет изображения на экране или нет звуков BIOS.

Когда питание подано, BIOS проводит точный тест схемы, памяти, клавиатуры, видеокарты, жёсткого диска, затем анализирует системную конфигурацию. После инициализации базовой системы ввода/вывода идёт загрузка операционной системы.

Диагностическая карта не будет отображать данные в следующих случаях:
1. Карта вставлена в материнскую плату без центрального процессора.
2. Когда горит диод RST LED.

Общее описание POST карты

Коды на карте отображаются в определённой последовательности

Код может быть не определён

Для различных производителей BIOS (AMI, Award, Phoenix), значения кодов различно. (Определение производителя BIOS)

Карту можно подключать к PCI и ISA слотам. Обычно коды начинаются с "00" до "FF" на PCI слоте. На некоторых материнских платах код может остановиться на "38"

На материнских платах коды ошибок BIOS постоянно обновляются, так что они могут отсутствовать в таблице.

На некоторых POST картах могут отсутствовать некоторые светодиоды.

Описание светящихся диодов:

Светодиод	Тип	Описание
RUN	Мерцание	Если светодиод горит, материнская плата включена, не имеет значения какие коды проходят
CLK	BUS CLOCK	Горит когда питание подано на материнскую плату (обычно без процессора)
BIOS	Считывание BIOS	Светодиод включается и выключается когда подаётся питание на материнскую плату, при чтении BIOS процессором
IRDY	Менеджер готов	Светодиод включается и выключается когда есть сообщение
OSC	Мигание	Загорается когда подано питание на материнскую плату, или если нет то кристалл колебательного контура сломан
FRAME	Период кадра	Горит всё время. Включается и выключается когда есть сообщение
RST	Reset	Загорается на пол секунды, когда нажимаете на кнопку включения или сброса. Если горит питание, то стоит проверить RESET (замыкает или сломан).
12V	Power	Загорается единожды при включении, подаче питания, если не загорается это означает короткое замыкание на материнской плате или нет 12В.
-12V	Питание	Тоже самое что и "12V"
5V	Питание	Тоже самое что и "12V"
-5V	Питание	Тоже самое что и "12V" (-5V только для ISA слота)
3V3	Питание	Загорается при подаче питания (только PCI), где есть 3,3В. Если нет на материнской плате дежурного напряжения 3,3В - не загорается

Алгоритм работы с POST картой

Таблица кодов ошибок

Код	Award	AMI	Phoenix4.0 / Tendy3000
00		Code copying to specific areas is done/Passing control to INT 19h boot loader next.
01	Processor Test 1, Processor status (1FLAGS) verification. Test the following processor status flags: carry, zero, sign, overflow. The BIOS sets each flag, verifies they are set, then turns each flag off and verifies it is off.		CPU is testing the register inside or failed, please change the CPU and check it.
02	Test All CPU Registers Except SS, SP, and BP with Data FF and 00		Verify Real Mode
03	Disable NMI, PIE, AIE, UEI, SQWV Disable video, parity checking, DMA Reset math coprocessor Clear all page registers, CMOS shutdown byte Initialize timer 0, 1, and2, including set EISA timer to a known state Initialize DMA controllers 0 and 1 Initialize interrupt controllers 0 and 1 Initialize EISA extended registers	Disable NMI, PIE, AIE, UEI, SQThe NMI is disabled. Next, checking for a soft reset or a power on condition	Disable Non-Mask-able interrupt (NMI)
04	RAM must be periodically refreshed to keep the memory from decaying. This refresh function is working properly		Get CPU type
05	Keyboard Controller initialization	The BIOS stack has been built. Next, disabling cache mamory.	DMA initialization in progress or failure
06	Reserved	Uncompressing the POST code next.	Initialized system hardware
07	Verifies CMOS is Working Correctly, Detects Bad Battery	Next, initializing the CPU data area	Disable shadow and execute code from the ROM
08	Early chip set initialization Memory presence test OEM chip set routines Clear low 64K memory Test first 64K memory	The CMOS checksum calculation is	Initialize chipset with with initial POST values
09	Cyrix CPU initialization Cach initialization		Set IN POST flag
0A	Initialize first 120 interrupt vectors with SPURIOUS-INT-HDLR and initialize INT 00h-1Fh according to INT-TBL	The CMOS checksum calculation is done. Linitializing the CMOS status register for date and time next	Initialize CPU registers
0B	Test CMOS RAM Checksum. If bad, or INS Key Pressed, Load Defaults	The CMOS status register is initialized. Next. Performing any requirect initialization before the keyboard BAT command is issued	Enable CPU cach
0C	Detect Type of Keyboard Controller and Set NUM LOCK Status	The keyboard controller input butter is free Next, issuing the BAT command to the keyboard controller	Initialize caches to initial POST values
0D	Detect CPU Clock Read CMOS location 14h to find out type of video in use Detect and initialize video adapter
0E	Test Video Memory, write sign-on message to screen Setup shadow RAM? Enable shadew according to setup	The keyboard controller BAT command result has been verified. Next, performing any necessary initialization after the keyboard controller BAT command test	Initialize I/O component
0F	Test DMA Cont. 0; BIOS Checksum Test Keyboard Detect and initialization	The initialization after the keyboard controller BAT command test is done. The keyboard command byte is written next	Initialization the local bus IDE
10	Test DMA Controller 1	Test DMA The keyboard controller command byte is written. Next, issuing the Pin 23 and 24 Blocking and unblocking command	Initialize Power Management
11	Test DMA Page Registers	Next, checking if "End" or "Ins" keys were pressed during power on. Initializing CMOS RAM in every boot AMIBIOS POST option was set in AMIBCP or the "End" key was pressed	Load alternate registers with initial POST values
12	Reserved	Next, disabling DMA controllers 1 and 2 and interrupt controllers 1 and 2	Restore CPU control word during warm boot
13	Reserved	The video display has been disabled. Port B has been initialized. Next, initializing the chipset	initialize PCI Bus Mastering devices
14	Test 8254 Timer 0 Counter 2	The 8254 timer test will begin next	Initialize keyboard controller
15	Verify 8259 Channel 1 interrupts by Turning Off and On the interrupt Lines
16	Verify 8259 Channel 2 interrupts by Turning Off and On the interrupt Lines		BIOS ROM checksum
17	Turn Off interrupts Then Verify No Interrupt Msk Register is On		Initialize cach before memory Auto size
18	Force an interrupt and Verify the interrupt and Verify the interrupt Occurred		8254 timer initialization
19	Test Stuck NMI Bits; Verify NMI Can Be Cieared		The 8254 timer test is over. Starting the memory refresh test next
1A	Display CPU clock	The memory refresh line is toggling. Checking the 15 second on/off time next	8237 DMA controller initialization
1B	Reserved
1C	Reserved		Reset Programmable interrupt Controller
1D	Reserved
1E	Reserved
1F	If EISA non-volatile memory checksum is good, execute EISA initialization If not, execute ISA tests an clear EISA mode flag Test EISA configuration memory Integrity (checksum & communication interface)
20	Initialize Slot O (System Board)		Test DRAM refresh
21	Initialize Slot 1
22	Initialize Slot 2		Test 8742 Keyboard Controller
23	Initialize Slot 3	Reading the 8042 input port and disabling the MEGAKEY Green PC feature next. Making the BIOS code segment writable and performing any necessary configuration before initializing the interrupt vectors
24	Initialize Slot 4	The configuration required before interrupt vector initialization has completed. Interrupt vector initialization is about to begin	Set ES segment register to 4Gb
25	Initialize Slot 5	Interrupt vector initialization is done. Clearing the password if the POST DIAG awitch is on
26	1. test the exeptional situation of protected of protected mode, check the memory of cpu and mainboard. 2. no fateful trouble, VGA displayed normally. If nonfateful trouble occurred, then display error message in VGA otherwise boot operating system, and code "26" is OK code, no any other codes to display	1. read/write input, output port of 8042 keyboard; ready for revolve mode, continue to get ready for initialization of all data, check the 8042 chips on mainboard. 2. refere to the left	1. enable A20 adress line, check the A20 pins of memory controlling chips, and check circuit, correlated to pins, in memory slot, may be A20 pin and memory pins are not in contact, or memory A20 pins bad. 2. refere to the left
27	Initialize Slot 7	Any initialization before setting the video mode will be done next
28	Initialize Slot 8	Initialization before setting the video mode is complete. Configuring the monochrome mode and color mode settings next	Auto size DRAM
29	Initialize Slot 9		Initialize POST Memory Manager
2A	Initialize Slot 10	Initializing the different bus system, static, and output devices, if present	Clear 512 KB base RAM
2B	Initialize Slot 11	Passing control to the video ROM to perform any required configuration before the video ROM test
2C	Initialize Slot 12	All necessary processing before passing control to the video ROM is done. Looking for the video ROM next and passing control to it	RAM failure on address line xxx*
2D	Initialize Slot 13	The video ROM has returned has returned control to BIOS POST Performing any required processing after the video ROM had control
2E	Initialize Slot 14	Completed pest-video ROM test processing. If the EGA/VGA controller is not found, performing the display memory Read/write test next	RAM failure on data bits Xxxx* of low byte of memory bus
2F	Initialize Slot 15	The EGA/VGA controller was not found. The display memory read/write test is about to begin	Enable cach before system BIOS shadow
30	Size Base Memory From 256K to 640K and Extended Memory Above 1MB	The display memory read/write test passed. Look for retrace checking next
31	Test Base Memory From 256K to 640K and Extended Memory Above 1MB	The display memory read/write test or retrace checking failed. Performing the alternate display memory read/write test next
32	If EISA Mode, Test EISA Memory Found in Slots initialization	The alternate display memory read/write test passed. Looking for alternate display retrace checking next	Test CPU Bus-clock frequency
33	Reserved		Initialize Phoenix Dispatch manager
34	Reserved	Video display checking is over. Setting the display mode next
35	Reserved
36	Reserved		Warm start and shut down
37	Reserved	The display mode is set. Displaying the power on message next
38	Reserved	Initializing the bus input, IPL, general device next, if present	Shadow system BIOS ROM
39	Reserved	Displaying bus initialization error messages
3A	Reserved	The new cursor position has been read and saved. Displaying the Hit "Del" message next	Auto size cach
3B	Reserved	The Hit "Del" message is displayed. The protected mode memory test is about to start
3C	Setup Enabled		Advanced configuration of chipset registers
3D	Detect if mouse is present, initialize mouse, install interrupt vectors		Load alternate registers with CMOS values
3E	Initialize cache controller
3F	Reserved
40	Display virus protect. Disable or Enable	Preparing the descriptor tables next
41	Initialize Floppy Disk Drive Controller and any drives		Initialize extended memory for RomPilot
42	Initialize Hard Drive Controller and any drives	The descriptor tables are prepared. Enteling protected mode for the memory test next	Initialize interrupt vectors
43	Detect and initialize Serial & Parallel Ports and Game Port	Entered protected mode. Enabling interrupts for diagnostics mode next
44	Reserved	Interrupts enabled if the diagnostics switch is on. Initializing data to check memory wraparound at 0:0 next
45	Detect and initialize math coprocessor	Data initialized. Checking for memory wraparound at 0: 0 and finding the total system memory size next	POST device initialization
46	Reserved	The memory wraparound test is done. Memory size calculation has been done. Writing patterns to tset memory next	Check ROM copyright notice
47	Reserved	The memory pattern has been to extended memory. Writing patterns to the base 640 KB memory	Initialize 120 support
48	Reserved	Patterns written in base memory. Determining the amount of memory below 1MB next	Check video configuration against CMOS
49	Reserved	The amount of memory below 1MB has been found and verified. Determining the amount of memory above 1 MB memory next	Initialize PCI bus and devices
4A	Reserved		Initialize all video adapters in system
4B	Reserved	The amount of memory above 1MB has been found and verified. Checking for a soft reset and clearing the memory below 1MB for the soft reset next. If this is a power on situation, going to checkpoint 4Eh next	QuletBoot start (optional)
4C	Reserved	The memory below 1MB has been cleared via a soft reset. Clearing the memory above 1MB next	Shadow video BIOS ROM
4D	Reserved	The memory above 1MB has been cleared via a soft reset. Saving the memory size next. Going to checkpoint 52h next
4E	Reboot if Manufacturing Mode; if not, Display Messages and Enter Setup	The memory test started, but not as the result of a soft reset. Displaying the first 64KB memory size next	Display BIOS copyright notice
4F	Ask Password Security (Optional)	The memory size display has started. The display is updated during the memory test. Performing the sequential and random memory test next	Initialize MultiBoot
50	Write All CMOS Values Back to RAM and Clear	The memory below 1MB has been tested and initialized. Adjusting the displayed memory size fot relocation and shadowing next	Display CPU type and speed
51	Enable Parity Checker. Enable NMI, Enable Cache Before Boot	The memory size display was adjusted for relocation and shadowing. Testing the memory above 1MB next	Initialize EISA board
52	Initialize Option ROMs from C8000h to EFFFFh or if FSCAN Enabled to F7FFFh	The memory above 1MB has been tested and initialized. Saving the memory size information next	Test keyboard
53	Initialize Time Value in 40h: BIOS Area	The memory size information and the CPU registers are saved. Entering real mode next
54		Shutdown was successful. The CPU is in real mode. Disabling the Gate A20 line, parity, and the NMI next	Set key click if enabled
55
56			Enable USB devices
57		The A20 address line, parity, and the NMI are disabled. Adjusting the memory size depending on relocation and shadowing next
58		The memory size was adjusted for relocation and shadowing. Clearing the Hit "DEL" message next	Test for unexpected interrupts
59		The Hit "DEL" message is cleared. The "WAIT..." message is displayed. Starting the DMA and interrupt controller test next	Initialize POST display service
5A			Display prompt Press F2 to enter SETUP
5B			Disable CPU cache
5C			Test RAM betweeb 512 and 640 kB
60	Setup virus protection (boot sector protection) functionality according to setup setting	The DMA page register test passed. Performing the DMA Controller 1 base register test next	Test extended memory
61	Try to turn on level 2 cach (if L2 cach already turned on in post 3D, this part will be skipped) Sat the boot up speed according to setup setting Last chance for chipset initialization Last chance for power management initialization (Green BIOS Only) Show the system configuration table
62	Setup the NUM lock. According to setup values Programm the NUM lock. Typematic rate & typematic speed according to setup setting	The DMA controller 1 base register test passed. Performing the DMA controller 2 base register test next	Test extended memory address lines
63	If there is any changes in the hardware configuration. Update the ESCD information (PnP BIOS only) Clear memory that have been used Boot system via INT 19h
64			Jump to UserPatch1
65		The DMA controller 2 base register test passed. Programming DMA controller 1 and 2 next
66		Completed programming DMA controllers 1 and 2 initializing the 8259 interrupt controller next	Configure advanced cach registers
67		Completed 8259 interrupt controller initialization	Initialize Multi Processor APIC
68			Enable external and CPU caches
69			Setup System Management Mode (SSM) area
6A			Display external L2 cach size
6B			Load custom defaults (optional)
6C			Display shadow-area message
6E			Display possible high address for UMB recovery
6F
70			Display error message
71
72			Check for configuration errors
76			Check for keyboard errors
7C			Set up hardware interrupt vectors
7D			Initialize intelligent System Monitoring
7E			Initialize coprocessor if present
7F		Extended NMI source enabling is in progress
80		The keyboard test has started. Clearing the output buffer and checking for stuck keys. Issuing the keyboard reset command next	Disable onboard Super I/O ports and IRQs
81		A keyboard reset error or stuck key was found. Issuing the keyboard controller interface test command next	Late POST device initialization
82		The keyboard controller interface test completed. Writing the command byte and initializing the circular buffer next	Detect and install external RS232 ports
83		The command byte was written and global data initialization has completed. Checking for a locked key next	Configure non-MCD IDE controllers
84		Locked key checking is over. Checking for a memory size mismatch with CMOS RAM data next	Detect and install external parallel ports
85		The memory size check is done. Displaying a soft error and checking for a password or bypassing WINBIOS Setup next	Initialize PC-compatible PnP ISA devices
86		The password was checked. Performing any required programming before WINBIOS Setup next	Re-initialize onboard I/O ports
87		The programming before WINBIOS Setup has completed Uncompressing the WINBIOS Setup code and executing the AMIBIOS Setup or WINBIOS Setup utility next	Configure Motherboard Configurable Devices (optional)
88		Returned from WINBIOS Setup end cleared the screen. Performing any necessary programming after WINBIOS Setup next	Initialize BIOS Data Area
89		The programming after WINBIOS Setup has completed. Displaying the power on screen message next	Enable Non-Maskable interrupts (NMis)
8A			Initialize Extended BIOS Data Area
8B		The first screen message has been displayed. The "WAIT..." message is displayed. Performing the PS/2 mouse check and extended BIOS data area allocation check next	Test and initialize PS/2 mouse
8C		Programming the WINBIOS Setup options next	Initialize floppy controller
8D		The WINBIOS Setup options are programmed. Resetting the hard disk controller next
8E		The hard disk controller has been reset. Configuring the floppy drive controller next
8F			Determine number of ATA drives (optional)
90			Initialize hard-disk controllers
91		The floppy drive controller has been configured. Cjnfiguring the hard disk drive controller next	Initialize local-bus hard-disk controllers
92			Jump to UserPatch2
93			Build MPTABLE for multi-processor board
95		Initializing bus adaptor ROMs from C8000h through D8000	Install CD ROM for boot
96		Initializing before passing control to the adaptor ROM at C800	Clear huge ES segment register
97		Initialation before the C800 adaptor ROM gains control has completed. The adaptor ROM check is next	Fix up Multi Processor table
98		The adaptor ROM had control and now returned control to BIOS POST. Performing any required processing after the option ROM returned controlA	Search for option ROMs. One long, two short beeps on checksum failure
99		Any initialization required after the option ROM test has completed. Configuring the timer data area and printer base address next	Check for SMART Drive (optional)
9A		Set the timer and printer base address. Setting the RS-232 base address next	Shadow option ROMs
9B		Returned after setting the RS-232 base address. Performing any required initialization before the coprocessor test next	Required initialization before the Coprocessor test is over. Initializing the Coprocessor next
9С		Required initialization before the Coprocessor test is over. Initializing the Coprocessor next	Set up Power Management
9D		Coprocessor initialized Performing any required initialization after the Coprocessor test next	Initialize security engine (optional)
9E		Initialization after the Coprocessor test is complete. Checking the extended keyboard, keyboard ID, and NumLock key next. Issuing the keyboard ID command next	Enable hardware interrupts
9F			Determine number of ATA and SCSI drivers
A0			Set time of day
A1			Check key lock
A2		Displaying any soft error next
A3		The soft error display has completed. Setting the keyboard typematic rate next
A4		The keyboard typematic rate is set. Programming the memory wait states next	Initialize typematic rate
A5		Memory wait state programming is over. Clearning the screen and enabling parity and the NMI next
A7		NMI and parity enabled. Performing any initialization required before passing control to the adaptor ROM at E000 next
A8		Initialization before passing control to the adaptor ROM at E000h completed. Passing control to the adaptor ROM at E000h next	Erase F2 prompt
A9		Returned from adaptor ROM at E000h control. Performing any initialization required after the E000 option ROM had control next
AA		Initialization after E000 option ROM control has completed. Displaying the system configuration next	Scan for F2 key stroke
AB		Uncompressing the DMI data and executing DMI POST initialization next
AC			Enter SETUP
AE			Clear boot flag
B0	If interrupts Occurs in protected mode	The system configuration is displayed	Check for errors
B1	If unmasked NMI Occurs. Display Press F1 to Disable NMI, F2 Reboot	Copying any code to specific areas	Inform RomPilot about the end of POST
B2			POST done prepare to boot operating system
B3
B4			1 One short beep before boot
B5			Terminate Quiet Boot (optional)
B6			Check password (optional)
B7			Initialize ACPI BIOS
B8
B9			Prepare Boot
BA			Initialize SMBIOS
BB			Initialize PnP Option ROMs
BC			Clear parity checkers
BD			Display MultiBoot menu
BE	Program chipset registers with power on BIOS defaults		Clear screen (optional)
BF	Program the rest of the chipset's value according to setup (later setup value program) If auto configuration is anabled, programmed the chipset with predefined values in the MODBINable Auto Table		Check virus and backup reminders
C0	Turn off OEM specific cach, shadow Initialize standard devices with default values: DMA controller (8237); Programmable interrupt Controller (8259); Programmable interval Timer (8254); RTC chip		Try to boot with INT 19
C1	OEM Specific-Test to size On-Board memory		Initialize POST error manager (PEM)
C2			Initialize error logging
C3	Test the first 256K DRAM Expand the compressed codes into temporary DRAM area including the compressed system BIOS & Option ROMs		Initialize error display function
C4			Initialize system error handler
C5	OEM Specific-Early Shadow Enable for fast boot		PnPnd dual CMOS (optional)
C6	External Cache Size Detection		Initialize note dock (optional)
C7			Initialize note dock late
C8			Force check (optional)
C9			Extended checksum (optional)
CA			Redirect int 15h to enable remote keyboard
CB			Redirect int 13h to Memory Technologies Devices such as ROM, RAM, PCMCIA, and serial disk
CC			Redirect int 10h to enable remote serial video
CD			Re-map I/O and memory for PCMCIA
CE			Initialize digitizer and display message
D0		The NMI is disable. Power on delay is starting. Next, the initialization code checksum will be verified
D1		Initializing the DMA controller, performing the keyboard controller BAT test, starting memory refresh, and entering 4GB flat mode next
D2			Unknown interrupt
D3		Starting memory sizing next
D4		Returning to real mode. Executing any OEM patches and setting the stack next
D5		Passing control to the uncompressed code in shadow RAM at E000: 0000h. The initialization code is copied to segment 0 and control will be transferred to segment 0
D6		Control is in segment 0 Next, checking if "Ctrl" "Home" was pressed and verifying the system BIOS checksum. If either "Ctrl" "Home" was pressed or the system BIOS checksum is bad, next will go to checkpoint code E0h. Otherwise, going to checkpoint code D7h
E0		The onboard floppy controller if available is initialized. Next, beginning the base 512 KB memory test	Initialize the chipset
E1	E1 Setup-Page E1	Initializing the interrupt vector table next	Initialize the bridge
E2	E2 Setup-Page E2	Initializing the DMA and interrupt controllers next	Initialize the CPU
E3	E3 Setup-Page E3		Initialize system timer
E4	E4 Setup-Page E4		Initialize system I/O
E5	E5 Setup-Page E5		Check force recovery boot
E6	E6 Setup-Page E6	Enabling the floppy drive controller and Timer IRQs. Enabling internal cach memory	Checksum BIOS ROM
E7	E7 Setup-Page E7		Go to BIOS
E8	E8 Setup-Page E8		Set Huge Segment
E9	E9 Setup-Page E9		Initialize Multi Processor
EA	EA Setup-Page EA		Initialize OEM special code
EB	EB Setup-Page EB		Initialize PIC and DMA
EC	EC Setup-Page EC		Initialize Memory type
ED	ED Setup-Page ED	Initializing the floppy drive	Initialize Memory size
EE	EE Setup-Page EE	Looking for a floppy diskette in drive A: Reading the first sector of the diskette	Shadow boot block
EF	EF Setup-Page EF	A read error occurred while reading the floppy drive in drive A:	System memory test
F0		Next, searching for the AMIBOOT.ROM file in the root directory	Initialize interrupt vectors
F1		The AMIBOOT.ROM file is not in the root directory	Initialize Run Time Clock
F2		Next, reading and analyzing the floppy diskette FAT to find the clusters occupied by the AMIBOOT.ROM file	Initialize video
F3		Next, reading the AMIBOOT.ROM file, cluster by cluster	Initialize System Management Manager
F4		The AMIBOOT.ROM file is not the correct size	Output one beep
F5		Next, disabling internal cach memory	Clear Huge Segment
F6			Boot to mini DOS
F7			Boot to full DOS
FB		Next, detecting the type of flash ROM
FC		Next, erasing the flash ROM
FD		Next, programming the flash ROM
FF		Flash ROM programming was successful. Next, restarting the system BIOS

Описание звуковых сигналов

AMI BIOS Фатальные ошибки

1 beep	DRAM Refresh Failure. Try reseating the memory first. If the error still occurs, replace the memory with known good chips.
2 beeps	Parity error in first 64K RAM. Try reseating the memory first. If the error still occurs, replace the memory with known good chips
3 beeps	Base 64K RAM Failure. Try reseating the memory first. If the error still occurs, replace the memory with known good chips
4 beeps	System timer failure
5 beeps	Process failure
6 beeps	Keyboard controller 8042-Gate A20 Error. Try reseating the keyboard controller chip. If the error still occurs, replace the keyboard chip. If the error persists, check parts of the system relating to the keyboard, e.g. try another keyboard, check to see if the system has a keyboard fuse
7 beeps	Processor, Virtual Mode Exception Interrupt Error
8 beeps	Display memory Read/Write test failure (non-fatal). Replace the video card or the memory on the video card
10 beeps	CMOS shutdown register read/write error
11 beeps	Cache memory error

AMI BIOS звуковые коды (не фатальные ошибки)

2 short	POST Failure-one or more of the hardware tests has failed
1 long 2 short	An error was encountered in the video BIOS ROM, or a horizontal retrace failure has been encountered
1 long 3 short	Conventional/Extended memory failure
1 long 8 short	Display/Retrace test failed

Award BIOS звуковые коды

1 short	No error during POST
2 short	Any Non-fatal error, enter CMOS SETUP to reset
1 long 1 short	RAM or motherboard error
1 long 2 short	Video error, cannot initialize screen to display any information
1 long 3 short	Keyboard controller error
1 long 9 short	Flash RAM/EPROM (which on the motherboard) error. (BIOS error)
long beep	Memory bank is not plugged well, or broken

Phoenix BIOS звуковые коды

Звуковые коды	Описание/Что проверять?
1-1-2	Ошибка при тесте процессора. Процессор неисправен. Замените процессор
1-1-3	Ошибка записи/чтения данных в/из CMOS-памяти.
1-1-4	Обнаружена ошибка при подсчете контрольной суммы содержимого BIOS.
1-2-1	Ошибка инициализации материнской платы.
1-2-2 или 1-2-3	Ошибка инициализации контроллера DMA.
1-3-1	Ошибка инициализации схемы регенерации оперативной памяти.
1-3-3 или 1-3-4	Ошибка инициализации первых 64 Кбайт оперативной памяти.
1-4-1	Ошибка инициализации материнской платы.
1-4-2	Ошибка инициализации оперативной памяти.
1-4-3	Ошибка инициализации системного таймера.
1-4-4	Ошибка записи/чтения в/из одного из портов ввода-вывода.
2-1-1	Обнаружена ошибка при чтении/записи 0-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-1-2	Обнаружена ошибка при чтении/записи 1-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
1-2-3-1	Обнаружена ошибка при чтении/записи 2-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-1-4	Обнаружена ошибка при чтении/записи 3-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-2-1	Обнаружена ошибка при чтении/записи 4-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-2-2	Обнаружена ошибка при чтении/записи 5-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-2-3	Обнаружена ошибка при чтении/записи 6-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-2-4	Обнаружена ошибка при чтении/записи 7-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-3-1	Обнаружена ошибка при чтении/записи 8-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-3-2	Обнаружена ошибка при чтении/записи 9-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-3-3	Обнаружена ошибка при чтении/записи 10-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-3-4	Обнаружена ошибка при чтении/записи 11-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-4-1	Обнаружена ошибка при чтении/записи 12-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-4-2	Обнаружена ошибка при чтении/записи 13-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-4-3	Обнаружена ошибка при чтении/записи 14-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
2-4-4	Обнаружена ошибка при чтении/записи 15-го бита (в шестнадцатеричном представлении) первых 64 Кбайт ОЗУ
3-1-1	Ошибка инициализации второго канала DMA.
3-1-2 или 3-1-4	Ошибка инициализации первого канала DMA.
3-2-4	Ошибка инициализации контроллера клавиатуры.
3-3-4	Ошибка инициализации видеопамяти.
3-4-1	Возникли серьёзные проблемы при попытке обращения к монитору.
3-4-2	Не удается инициализировать BIOS видеоплаты.
4-2-1	Ошибка инициализации системного таймера.
4-2-2	Тестирование завершено.
4-2-3	Ошибка инициализации контроллера клавиатуры.
4-2-4	Критическая ошибка при переходе центрального процессора в защищенный режим.
4-3-1	Ошибка инициализации оперативной памяти.
4-3-2	Ошибка инициализации первого таймера.
4-3-3	Ошибка инициализации второго таймера.
4-4-1	Ошибка инициализации одного из последовательных портов.
4-4-2	Ошибка инициализации параллельного порта.
4-4-3	Ошибка инициализации математического сопроцессора.
Длинные, непрекращающиеся сигналы	Неисправна материнская плата.
Звук сирены с высокой на низкую частоту	Неисправна видеокарта, проверить электролитические емкости, на утечку или заменить все на новые, заведомо исправные.
Непрерывный сигнал	Не подключен (неисправен) кулер CPU.

Звуковые сигналы Compaq BIOS

Сигнал	Значение (описание ошибки)
1 короткий	Ошибок нет. Нормальная загрузка системы.
1 длинный + 1 короткий	Ошибка контрольной суммы памяти CMOS BIOS. Возможно сел аккумулятор ROM.
2 коротких	Глобальная ошибка.
1 длинный + 2 коротких	Ошибка инициализации видеокарты. Проверьте правильность установки видеокарты.
7 сигналов (1 длинный, 1 с, 1?, 1 короткий, пауза, 1 длинный, 1 короткий, 1 короткий)	Неисправность видеокарты AGP. Проверьте правильность установки.
1 длинный постоянный	Ошибка оперативной памяти, попробуйте перезагрузиться.
1 короткий + 2 длинных	Неисправность оперативной памяти. Перезагрузитесь через Reset.

Звуковые сигналы DELL BIOS

Beep-коды представлены последовательностью звуковых сигналов. Например, 1-1-2 означает 1 звуковой сигнал, пауза, 1 звуковой сигнал, пауза, и 2 звуковых сигнала.
Сигнал	Значение (описание ошибки)
1-2	Не подключена видеокарта
1-2-2-3	Ошибка контрольной суммы ПЗУ BIOS
1-3-1-1	Ошибка обновления DRAM
1-3-1-3	Ошибка клавиатуры 8742
1-3-3-1	Неисправна память
1-3-4-1	Ошибка ОЗУ на линии xxx
1-3-4-3	Ошибка ОЗУ на младшем бите xxx
1-4-1-1 тест	Ошибка ОЗУ на старшем бите xxx

Звуковые сигналы Quadtel BIOS

Сигнал	Значение (описание ошибки)
1 короткий сигнал	Ошибок не обнаружено, ПК исправен
2 коротких сигнала	Ошибка контрольной суммы ПЗУ BIOS
1 длинный, 2 коротких сигнала	Ошибка видеоадаптера. Неисправен видеоадаптер. Переустановите видеоадаптер или замените адаптер, если это возможно
1 длинный, 3 коротких сигнала	Один или несколько из периферийных контроллеров неисправен. Замените контроллеры и проведите повторное тестирование