Computer POST and beep codes!!
Posted: Wed Aug 31, 2011 7:50 pm
AMI BIOS beep codes
[Beep Code]__[Descriptions]
1 short:__ DRAM refresh failure
2 short:__ Parity circuit failure
3 short:__ Base 64K RAM failure
4 short:__ System timer failure
5 short:__ Process failure
6 short:__ Keyboard controller Gate A20 error
7 short:__ Virtual mode exception error
8 short:__ Display memory Read/Write test failure
9 short:__ ROM BIOS checksum failure
10 short:__ CMOS shutdown Read/Write error
11 short:__ Cache Memory error
1 long, 3 short:__ Conventional/Extended memory failure
1 long, 8 short:__ Display/Retrace test failed
AWARD BIOS beep codes
1 long, 2 short:__ Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information
Any other beep(s):__ RAM problem.
IBM BIOS beep codes
No Beeps:__ No Power, Loose Card, or Short.
1 Short Beep:__ Normal POST, computer is ok.
2 Short Beep:__ POST error, review screen for error code.
Continuous Beep:__ No Power, Loose Card, or Short.
Repeating Short Beep:__ No Power, Loose Card, or Short.
One Long and one Short Beep:__ Motherboard issue.
One Long and Two Short Beeps:__ Video (Mono/CGA Display Circuitry) issue.
One Long and Three Short Beeps:__ Video (EGA) Display Circuitry.
Three Long Beeps:__ Keyboard / Keyboard card error.
One Beep, Blank or Incorrect Display:__ Video Display Circuitry.
Macintosh startup tones
Error Tone. (two sets of different tones):__ Problem with logic board or SCSI bus.
Startup tone, drive spins, no video:__ Problem with video controller.
Powers on, no tone:__ Logic board problem.
High Tone, four higher tones:__Problem with SIMM
Phoenix BIOS beep codes
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 POST values.
1-1-3-2:__ Set in POST flag.
1-1-3-3:__ Initialize CPU registers.
1-1-4-1:__ Initialize cache to initial POST values.
1-1-4-3:__ Initialize I/O.
1-2-1-1:__ Initialize Power Management.
1-2-1-2:__ Load alternate registers with initial POST values.
1-2-1-3:__ Jump to UserPatch0.
1-2-2-1:__ Initialize keyboard controller.
1-2-2-3:__ BIOS ROM checksum.
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 to register to 4 GB.
1-3-3-1:__ 28 Autosize DRAM.
1-3-3-3:__ Clear 512K base RAM.
1-3-4-1:__ Test 512 base address lines.
1-3-4-3:__ Test 512K base memory.
1-4-1-3:__ Test CPU bus-clock frequency.
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 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:__ 56 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 512 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:__ Configure advanced cache registers.
2-3-3-1:__ Enable external and CPU caches.
2-3-3-3:__ Display external cache size.
2-3-4-1:__ Display shadow message.
2-3-4-3:__ Display non-disposable 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 interrupts 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:__ Re-initialize 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 key stroke.
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:__ Clear screen (optional).
3-4-4-4:__ 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.
4-3-1-3:__ Initialize the chipset.
4-3-1-4:__ Initialize refresh counter.
4-3-2-1:__ Check for Forced Flash.
4-3-2-2:__ Check HW status of ROM.
4-3-2-3:__ 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.
4-3-4-1:__ Boot the Flash program.
4-3-4-2:__ Initialize the boot device.
4-3-4-3:__ Boot code was read OK.
[Beep Code]__[Descriptions]
1 short:__ DRAM refresh failure
2 short:__ Parity circuit failure
3 short:__ Base 64K RAM failure
4 short:__ System timer failure
5 short:__ Process failure
6 short:__ Keyboard controller Gate A20 error
7 short:__ Virtual mode exception error
8 short:__ Display memory Read/Write test failure
9 short:__ ROM BIOS checksum failure
10 short:__ CMOS shutdown Read/Write error
11 short:__ Cache Memory error
1 long, 3 short:__ Conventional/Extended memory failure
1 long, 8 short:__ Display/Retrace test failed
AWARD BIOS beep codes
1 long, 2 short:__ Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information
Any other beep(s):__ RAM problem.
IBM BIOS beep codes
No Beeps:__ No Power, Loose Card, or Short.
1 Short Beep:__ Normal POST, computer is ok.
2 Short Beep:__ POST error, review screen for error code.
Continuous Beep:__ No Power, Loose Card, or Short.
Repeating Short Beep:__ No Power, Loose Card, or Short.
One Long and one Short Beep:__ Motherboard issue.
One Long and Two Short Beeps:__ Video (Mono/CGA Display Circuitry) issue.
One Long and Three Short Beeps:__ Video (EGA) Display Circuitry.
Three Long Beeps:__ Keyboard / Keyboard card error.
One Beep, Blank or Incorrect Display:__ Video Display Circuitry.
Macintosh startup tones
Error Tone. (two sets of different tones):__ Problem with logic board or SCSI bus.
Startup tone, drive spins, no video:__ Problem with video controller.
Powers on, no tone:__ Logic board problem.
High Tone, four higher tones:__Problem with SIMM
Phoenix BIOS beep codes
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 POST values.
1-1-3-2:__ Set in POST flag.
1-1-3-3:__ Initialize CPU registers.
1-1-4-1:__ Initialize cache to initial POST values.
1-1-4-3:__ Initialize I/O.
1-2-1-1:__ Initialize Power Management.
1-2-1-2:__ Load alternate registers with initial POST values.
1-2-1-3:__ Jump to UserPatch0.
1-2-2-1:__ Initialize keyboard controller.
1-2-2-3:__ BIOS ROM checksum.
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 to register to 4 GB.
1-3-3-1:__ 28 Autosize DRAM.
1-3-3-3:__ Clear 512K base RAM.
1-3-4-1:__ Test 512 base address lines.
1-3-4-3:__ Test 512K base memory.
1-4-1-3:__ Test CPU bus-clock frequency.
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 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:__ 56 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 512 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:__ Configure advanced cache registers.
2-3-3-1:__ Enable external and CPU caches.
2-3-3-3:__ Display external cache size.
2-3-4-1:__ Display shadow message.
2-3-4-3:__ Display non-disposable 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 interrupts 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:__ Re-initialize 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 key stroke.
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:__ Clear screen (optional).
3-4-4-4:__ 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.
4-3-1-3:__ Initialize the chipset.
4-3-1-4:__ Initialize refresh counter.
4-3-2-1:__ Check for Forced Flash.
4-3-2-2:__ Check HW status of ROM.
4-3-2-3:__ 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.
4-3-4-1:__ Boot the Flash program.
4-3-4-2:__ Initialize the boot device.
4-3-4-3:__ Boot code was read OK.