It can be purchased online (as a PDF file) for $15 or printed for $49.95, or it can be acquired as part of a larger set, called The PC Engineer's Reference Book. Color screens scheme Color Meaning Red Bad ROM Yellow CPU Exception Before Bootstrap Code is Loaded Green Bad Chip RAM or fail of Agnus Chip (check seating of Agnus) Black No CPU White Expansion passed test successfully Grey Turn on Constant white Failure of CPU Violet Return from InitCode() Sequence for A4000 Correct tests color sequence scheme A4000 presents just a light gray screen during its boot time (it just occurs in 2 or max 3 seconds) Light Gray = Initial hardware configuration tests passed = Initial system software tests passed = Final initialization test passed Failed tests color scheme Color Meaning Red ROM Error - Reset or replace Green CHIP RAM error (reset AGNUS and re-test) Blue Custom Chip(s) Error Yellow 68000 detected error before software trapped it (GURU) Amiga keyboard LED error signals The keyboards of historical Amiga models are not proprietary as it happened in early computer ages, but more pragmatically it was based on international standard ANSI/ISO 8859-1. Replace the IC if possible 2-1-2 64KB RAM failure Bit 1; This data bit on the first RAM IC has failed. Check the adapter 3 Beeps Keyboard controller error- The keyboard controller IC is faulty. http://orgias.org/beep-codes/hp-post-error-beep-codes.html
The most common problems that cause beeping sounds are: Memory and heat-related failures caused by a build-up of dust in critical cooling areas A keyboard key is stuck A memory DIMM or hard drive cable is not seated properly A component on the motherboard has failed A basic computer function was unable to start What to do when beep codes occur Listen to the beeping sound and write down the number of beeps before each pause, if the beeps are long or short, or if the beeps high or low in tone. Allow the system to complete its updates and changes. Reboot the computer. If an expansion board was recently added, remove it to see if the problem remains. have a peek at this web-site
Topic Starter Posts: 6,000 +15 The complete BIOS beep Guide- Mylex 386 mobos BEEPS ERROR DESCRIPTION 1 long Normal boot- System is booting normally 2 long Video adapter failure- Either the video adapter is faulty, not seated properly or is missing 1 long, 1 short, 1 long Keyboard controller error- Either the keyboard controller IC is faulty or the system board circuitry is faulty 1 long, 2 short, 1 long Keyboard error- Either the keyboard controller is faulty or the system board circuitry is faulty. For example, in you insert a Promise Ultra-66 card but do not connect a hard drive to it, you will get the beep code. Replace the keyboard. Reseat the adapter or replace the adapter if possible 4-2-1 Timer failure- The system's timer IC has failed.
These codes are not valid for earlier models. Reseat CPU fan. Action: None. Hp Laptop Beep Codes Two POST seven-segment displays integrated on a computer motherboard The original IBM BIOS made POST diagnostic information available by outputting a number to I/O port 80 (a screen display was not possible with some failure modes).
Otherwise continue POST Base Memory Test Test RAM between 64K and 640K with several pattern test. Hp Beep Codes 5 Beeps All rights reserved. Replace the IC if possible 2-4-3 64KB RAM failure Bit 14; This data bit on the first RAM IC has failed. http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-bph07107 Replace the BIOS or upgrade Dec 27, 2007 #7 Tedster Techspot old timer.....
Replace the CMOS or motherboard 1 long DMA controller 0 failure- The DMA controller IC for channel 0 has failed. why not try these out Update BIOS while affected components are removed. Hp Desktop Beep Codes Although Bios Central has used reasonable effort to ensure accuracy we are unable to verify all codes posted. Hp Beep Codes 4 Beeps Reconnect or replace front audio harness. 918-Front USB Not Connected Front USB harness has been detached or unseated from motherboard.
If the CPU still does not function properly, replace the system board. navigate here If the error persists, update to the latest BIOS version and ME firmware version. Flash the ROM if needed. Check the case for proper air flow. Hp 4 Beeps Red Light
Beeps Description 1 short beep and 1 long beep Memory problem 2 short beeps and 1 long beep (repeats 5 times) Unable to initialize video or video card required but not installed 3 short beeps and 1 long beep CPU configuration error or CPU type is not compatible The following beep codes are common to many HP and Compaq desktop computers that can occur while restoring, flashing or updating the BIOS: Beeps Description 1 short beep Legacy floppy drive or CD/DVD drive not detected 2 short beeps Floppy diskette or compact disc not detected 3 short beeps Unable to start flashing (such as when missing a utility or BIOS image) 4 short beeps Flashing failed (checksum error, corrupted image, etc.) 5 short beeps BIOS recovery successful Beep codes for American Megatrends, Inc (AMI) BIOS The following AMI beep codes can occur when there is a problem during the attempt of a normal system startup. You're all welcome. Parity Check 2 Parity RAM failure. Check This Out Verify the correct ROM.
Topic Starter Posts: 6,000 +15 The complete BIOS beep Guide- IBM mobos IBM DESKTOPS Beeps Error Message Description 1 short Normal POST- System is booting properly 2 short Initialization error- Error code is displayed 1 long, 1 short System board error 1 long, 2 short Video adapter error 1 long, 3 short EGA/VGA adapter error 3 long 3270 keyboard adapter error Continuous Power supply error- Replace the power supply 999s Power supply error- Replace the power supply No beep Power supply failure- Replace the power supply --------------------------------------------------------------------- IBM THINKPAD LAPTOPS Continuous beeping: System board failure One beep; Unreadable, blank or flashing LCD: LCD connector problem; LCD backlight inverter failure; video adapter faulty; LCD assembly faulty; System board failure; or power supply failure One beep /Message "Unable to access boot source": Boot device failure; system board failure One long, two short beeps:System board failure- Video adapter problem; LCD assembly failure One long, four short beeps: Low battery voltage One beep every second: Low battery voltage Two short beeps with error codes: POST error message Two short beeps: System board failure Dec 27, 2007 #3 Tedster Techspot old timer..... Hp 3 Long Beeps 4 Short Beeps Macs made prior to 1987 crashed silently with the hexadecimal string and a Sad Mac icon. The section also includes some text messages that may be encountered during POST.
The beep codes for IBM computers are listed in Table D. (All are short beeps separated by pauses.)Table D Number of beeps Description 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 values 1-1-3-2 Set in POST flag 1-1-3-3 Initialize CPU registers 1-1-4-1 Initialize cache to initial values 1-1-4-3 Initialize I/O 1-2-1-1 Initialize power management 1-2-1-2 Load alternative registers with initial POST values 1-2-1-3 Jump to UserPatch0 1-2-2-1 Initialize timer initialization 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 register to 4GB 1-3-3-1 Autosize DRAM 1-3-3-3 Clear 512K base memory 1-3-4-1 Test 512K base address lines 1-3-4-3 Test 51K base memory 1-4-1-3 Test CPU bus-clock frequency 1-4-2-1 CMOS RAM read/write failure (This commonly indicates a problem on the ISA bus such as a card not seated.) 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 the 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 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 512K 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 Enable external and CPU caches 2-3-2-3 Configure advanced cache registers 2-3-3-1 Enable external and CPU caches 2-3-3-2 Initialize SMI handler 2-3-3-3 Display external cache size 2-3-4-1 Display shadow message 2-3-4-3 Display nondisposable 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 interrupt 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 Reinitialize 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 keystroke 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 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 4-2-4-3 Keyboard Controller failure (most likely problem is with RAM or cache unless no video is present) 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 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 4-3-4-2 Initialize the boot device 4-3-4-3 Boot code was read OK Keep in mind that IBM-labeled hardware contains components made by OEMs. Then, you can focus your troubleshooting efforts on that particular problem instead of wasting time with guesswork. Feel free to shoot me a PM with updates or corrections. Hp Beep Codes 3 Long 4 Short Topic Starter Posts: 6,000 +15 OLIVETTI Beep Codes: Olivetti 1076/AT&T BIOS Post Codes: PASS FAIL DESCRIPTION 41 7F CPU flag and register test 42 7E Check and verify CMOS shutdown code 43 7D BIOS ROM checksum test 44 7C Test the 8253 timer 45 7B Start memory refresh 46 7A Test the 8041 keyboard controller 47 79 Test the first 8KB of RAM 48 78 Test protected mode operation 49 77 Test CMOS RAM shutdown byte 4A 76 Test protected mod operation 4B 75 Test RAM from 8KB to 640KB 4C 74 Test all RAM above 1MB 4D 73 Test NMI 4E 72 Test RAM parity system 50 71 Test 8259 PIC 1 51 6F test 8259 PIC 2 52 6E Test DMA page register 53 6D Test 8237 DMA controller 1 54 6C Test 8237 DMA controller 2 55 6B Test PIO port 61h 56 6A Test the keyboard controller 57 69 Test the CMOS clock/calendar IC 59 68 Test the CPU protected mode 5A 66 Test CMOS RAM battery 5B 65 Test CMOS RAM 5C 64 Verify CMOS RAM checksum 5D 63 Test parallel port configuration 5E 62 Test serial port configuration 5F 61 Test memory configuration below 640KB 60 60 Test memory configuration above 1MB 61 5F Detect and test math coprocessor 62 5E Test configuration of game port adapter 62 5D Test key lock switch 63 5D Test hard drive configuration 64 5C Configure floppy drives 66 5B Test option ROM's - - Call interrupt 19 boot loader Return to Top Olivetti M20 BIOS Post Codes: Triangle Test CPU registers and instructions Triangle Test system RAM 4 vertical lines Test CPU call and trap instructions Diamond Initialize screen and printer drivers EC0 8255 parallel interface IC test failed EC1 6845 CRT controller IC test failed EC2 1797 floppy disk controller chip failed EC3 8253 timer IC failed EC4 8251 keyboard interface failed EC5 8251 keyboard test failed EC6 8259 PIC IC test failed EK0 Keyboard did not respond Ek1 Keyboard responds, but self test failed ED1 Disk drive 1 test failed ED0 Disk drive 0 test failed E10 Non-vectored interrupt error E11 Vectored interrupt error Return to Top Olivetti M24/AT&T BIOS Post Codes: 40 CPU flags and register test failed 41 BIOS ROM checksum test failed 42 Disable 8253 timer channel 1 43 8237 DMA controller test failed 44 8259 PIC test failed 45 Install the real interrupt vectors 48 Send beep and initialize all basic hardware Return to Top Olivetti PS/2 BIOS Post Codes: 01 Test CPU 02 Check CMOS shutdown byte 03 Initialize the PIC 04 Test refresh 05 Test CMOS/RTC periodic interrupt 06 Test timer ratio 07 Test first 64KB of RAM 08 Test 8042 keyboard controller 09 Test NMI 0A Test 8254 PIT 0B Test port 94h 0C Test port 103h 0D Test port 102h 0E Test port 96h 0F Test port 107h 10 Blank the display 11 Check the keyboard 12 Test CMOS RAM battery 13 Verify CMOS RAM checksum 14 Verify extended CMOS RAM checksum 15 Initialize system board and adapter 16 Initialize and test RAM 17 Test protected mode registers 18 Test CMOS RAM shutdown byte 19 Test CMOS protected mode 1A Initialize video adapter ROM scan 1B Test BIOS ROM checksum 1C Test PIC #1 1D Test PIC #2 1E Initialize interrupt vectors 1F Test CMOS RAM 20 Test extended CMOS RAM 21 Test CMOS real-time clock 22 Test clock calendar 23 Dummy checkpoint 24 Test watchdog timer 25 Test 64KB to 640KB RAM 26 Configure lower 640KB RAM 27 Test extended memory 28 Initialize extended BIOS data segment and log POST error 29 Configure memory above 1MB 2A Dummy checkpoint 2B Test RAM parity 2C Test DMA page registers 2D Test DMA controller registers 2E Test DMA transfer-count register 2F Initialize DMA controller 30 Test PIO 61 31 Test the keyboard 32 Initialize keyboard typematic rate and delay 33 Test auxiliary device 34 Test advanced protected mode 35 Configure parallel ports 36 Configure 8250 serial ports 37 Test and configure math co-processor 38 Test and configure game-port adapter 39 Configure and initialize hard disk 3A Floppy-disk configuration 3B Initialize ROM drivers 3C Display total memory and hard drives 3D Final initialization 3E Detect and initialize parallel ports 3F Initialize hard drive and controller 40 Initialize math co-processor 42 Initialize adapter ROM scan CC Unexpected processor excerption occurred DD Save DDNIL status EE NMI handler shutdown FF Call interrupt 19 boot loader Oct 20, 2008 #23 Tedster Techspot old timer.....
Reboot the computer. Generate interrupt and monitor CPU to test success. Thank you ! this contact form Beeps stop after fifth iteration but LEDs continue until problem is solved. 8 Invalid ROM based on bad checksum.
If the test identifies a hardware problem, the BIOS will display an error message on the monitor. Sometimes, it is shown 'Boot from CD'. (AMI BIOS) A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. Beeps Description 1 short beep POST process completed successfully - normal startup 1 long beep followed by 2 or 3 short beeps Unable to initialize video (to display the post code) Continuous beeping without pause Serious system related issue such as CPU overheating Other beep conditions Memory errors. The keyboard itself was an intelligent device and had its own processor and 4 kilobytes of RAM for keeping a buffer of the sequence of keys that were being pressed, thus can communicate with the user if a fault is found by flashing its main LED in sequence: Blinks Meaning 1 ROM checksum failure 2 RAM test failed 3 Watchdog timer failed 4 A shortcut exists between two row lines or one of the seven special keys (not implemented) See also Serial presence detect SPD memory hardware feature to auto-configure timings POST card References ^ Williams, Gregg (January 1982). "A Closer Look at the IBM Personal Computer".
RayBay May 22, 2008 #14 Zed TS Rookie Posts: 20 Very nice job....I commend you on the effort you put forth for the betterment of us all. If the error persists, replace the system board. top Provide feedback Please rate the information on this page to help us improve our content. Allow the computer to attempt to recover the BIOS.