When a computer is turned on, it goes through what is called a POST (power-on self test) routine. This is a short diagnostic procedure incorporated into the boot sequence by the BIOS manufacture for troubleshooting purposes.

Many times when there is an error in your boot sequence you will receive an on-screen error message. This error was printed by the video card. But, in some cases, the error is detected early in the boot process and the error cannot be received by the video card. The problem may even be caused by the video card or the monitor. This is why the need for beep codes came to be.

AMI (American Megatrends') BIOS

one short = DRAM refresh failure (Problem with memory)
two short = Parity circuit failure
three short = Base 64K RAM failure
four short = System Timer failure
five short = Processor failure
six short = Keyboard Controller / Gate A20 failure
seven short = Virtual Mode Exception error
eight short = Display Memory Read/Write failure (fault with video card)
nine short = ROM BIOS Checksum error (fault with BIOS chip)
ten short = CMOS Shutdown Read/Write error
eleven short = Cache memory
one long = Passed (no errors)
one long, two short = Video failure
one long, three short = Base / Extended Memory failure
one long, eight short = Display / Retrace Test failure

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AST Research BIOS

one short = Low level processor verification test failed (POST 1)
two short = Clearing keyboard controller buffers failed (POST 2)
three short = Keyboard controller reset failed (POST 3)
four short = Low level keyboard controller interface test (POST 4)
five short = Reading data from keyboard controller failed (POST 5)
six short = System board support chip initialization failed (POST 6)
seven short = Processor register read/write verify test failed (POST 7)
eight short = CMOS timer initialization failed (POST 8)
nine short = ROM BIOS checksum test failed (POST 9)
ten short = Initialize primary video (POST 10)
eleven short = 8254 timer channel 0 test failed (POST 11)
twelve short = 8254 timer channel 1 test failed (POST 12)
thirteen short = 8254 timer channel 2 test failed (POST 13)
fourteen short = CMOS power-on and time test failed (POST 14)
fifteen short = CMOS shutdown byte test failed (POST 15)
one long = DMA channel 0 test failed (POST 16)
one long, one short = DMA channel 1 test failed (POST 17)
one long, two short = DMA page register test failed (POST 18)
one long, three short = Keyboard controller interface test failed (POST 19)
one long, four short = Memory refresh toggle test failed (POST 20)
one long, five short = First 64 KB memory test failed (POST 21)
one long, six short = Setup interrupt vector table failed (POST 22)
one long, seven short = Video initialization failed (POST 23)
one long, eight short = Video memory test failed (POST 24)

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Award BIOS

one short = Passed (no errors)
two short = Any non-fatal error
one long, two short = Video failure
one long, three short = Keyboard Controller failure (applies to 286, 386 and 486)

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IBM BIOS

none = Power Supply or System Board failure (possible short)
one short = Passed (no errors)
one short = (blank screen) Video error (check cable)
one short = (no boot) Floppy Drive error
two short = Configuration Error (displayed on screen)
repeating short = Power Supply or System Board failure
continuous = Power Supply or System Board / Keyboard stuck
one long, one short = System Board failure
one long, two short = Video (Mono/CGA) failure (check cable)
one long, three short = Video (EGA) failure (check cable)
three long = Keyboard Card error

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Mylex BIOS

one = Normal boot
two = Video adapter error
three = Keyboard controller error
four = Keyboard error
five = PIC 0 error
six = PIC 1 error
seven = DMA page register error
eight = RAM refresh error
nine = RAM data error
ten = RAM parity error
eleven = DMA controller 0 error
twelve = CMOS RAM error
thirteen = DMA controller 1 error
fourteen = CMOS RAM battery error
fifteen = CMOS RAM checksum error
sixteen = BIOS ROM checksum error

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Mylex 386 BIOS

one long = Normal boot
two long = Video adapter error
one long, one short, one long = Keyboard controller error
one long, two short, one long = Keyboard error
one long, three short, one long = PIC 0 error
one long four short, one long = PIC 1 error
one long, five short, one long = DMA page register error
one long, six short, one long = RAM refresh error
one long, seven short, one long = RAM data error
one long, eight short, one long = RAM parity error
one long, nine short, one long = DMA controller 0 error
one long, ten short, one long = CMOS RAM error
one long, eleven short, one long = DMA controller 1 error
one long, twelve short, one long = CMOS RAM battery error
one long, thirteen short, one long = CMOS RAM checksum error
one long fourteen short, one long = BIOS ROM checksum error

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Phoenix BIOS

one, one, three = CMOS Read/Write
one, one, four = ROM BIOS Checksum failure
one, two, one = Programmable Interval Timer failure
one, two, two = DMA Initialisation failure
one, two, three = DMA Page Register Read/Write failure
one, three, one = RAM Refresh Verification error
one, three, three = First 64K RAM Chip/Data Line failure
one, three, four = First 64K RAM Odd/Even Logic
one, four, one = First 64K RAM: Address Line
one, four, two = First 64K RAM: Parity failure
one, four, three = Fail-Safe Timer Feature (EISA only)
one, four, four = Software NMI Port failure (EISA only)
two (followed by various combinations) = First 64K RAM Chip/Data Line failure (combinations indicate which bit)
three, one, one = Slave DMA Register failure
three, one, two = Master DMA Register failure
three, one, three = Master Interrupt Mask Register failure
three, one, four = Slave Interrupt Mask Register failure
three, two, four = Keyboard Controller failure
three, three, four = Display Memory failure
three, four, one = Display Retrace failure
three, four, two = Video ROM search proceeding
four, two, one = Timer Tick failure
four, two, two = Shutdown failure
four, two, three = Gate A20 failure
four, two, four = Unexpected Interrupt in Protected Mode
four, three, one = RAM test above 64K failure
four, three, two/three = Programmable Interval Timer, Channel 2 failure
four, three, four =Realtime Clock failure
four, four, one = Serial Port error
four, four, two = Parallel Port error
four, four, three = Math Co-processor failure
(tone) one, one, two = System Board Select
(tone) one, one, three = Extender CMOS RAM

Thanks kat Encik Pinggan

Kiriman ini telah diubahsuai oleh sarge: Sep 16 2006, 10:42 AM

ko jadi cam aku gak la....

kalau aku tukar je....

tapi try la tukar jumper bios tu (tengok manual untuk bios recovery...)

tak pun tukar chip bios tu... (ada jual ke?)

shah..

ko punya mobo ape jadi??..apa ko wat ngan ko nye board??

bole jalan lg ke..??

aloo..
aku nak tolong pun tak reti jugak..
tp setahu aku, kalu bios out, maknenye mobo ko pun out jugak..
kalu mobo ko support recovery bios, try cari jumper atau ape² yang berkaitan..
try your best..!!!!


p/s: aku paki gigabyte ga 7nnxp, support dual bios..

nampak gaye kene anta RMA

antar RMA laa kawang... tak yah susah2 ati nak pikir dah, tahap kritikal dah rosak nie

Try laa buat hot swapping BIOS...
Wokehh cun!!!~

tak batalkan warranti ker... bahaya gak tue, ada risiko utk rosakkan waranti nie

alloo..

hoodlums...bole tak ko terang skit pasal hot swapping bios nie
nak tau gak cam ne nak buat..

board tue aku dah anta rma tp tak de kabaran lg..yg aku tau kalo abit dpt detect yg aku flash bios tade rma...mampus wooo...

aku penah buat kat NF7-S aku..2-3 kali gak kene.so far alhamdulilah berjaya

hot swap ni cabut chip bios drp mobo time tgh ON

1. cari mobo nf7-s rev 2 yg OK
2. praktis cabut chip bios kat mobo ko.bile dah tahu skill die baru blh buat
3. sediakan 1 disket yg ade bios file yg betul
4. ON mobo yg OK tadi.
5. tekan alt-f2 time mule2 kuar display
6. bile die mintak disket ker ape tu
7. cabut bios asal yg ok tadi (pc tgh ON)
8. masuk chip yg problem.pastikan arah masuk tu betul
9. mule la reflash balik bios yg problem
10. restarr + load default+ save OFF pc
11. cube la bios tu.sure jadi nya

**
- kalau blh casing tu biar berdiri. mobo secara menegak.sbb takut nanti chip tu
terjatuh dan kene mane2 part.
- belatih betul2 cara nak cabut+masuk bios
- pastikan arah yg betul
- DO at u'r own risk [B][COLOR=red]

aku rasa sapa2 yg first time buat benda2 nie bacala arahan dulu... ikut satu2, sblm flash ambik note setiap benda penting... insyaallah selamat punya

aku cadangkan kalo kt sesaper yg takleh RMA nf7s-2 yg salah flash bios tuh kasik jer mobo tuh kt sesaper yg bleh buat cam sarge.. pastuh bayar la sket.. kalo ahli kelab AMD tuh, leh la dapatkan technical support..

arituh puas aku carik saper yg bleh buat.. lupa la plak nak tanya kt sarge..

takata takleh buat ker??die kat puchong jer

aku jauh laa.nak keno pos lagi.sanggup takpe

bole mendatangkan faedah kat ahli nie, bagus gak idea nie...

nanti bolela kita letakkan sbg khidmat teknikal utk kelab AMD

arituh aku tanya, dia tanak.. tak tau ler samada tak berani atau pun malas nak buat.. malas kot.. ala.. bukannyer suruh buat free pun, bayar ler sket.. tp takper la, arituh aku tanya sbb aku nak angkat mobo tuh tp yg dah tersalah flash bios punya dr forumer LYN, abistuh dia offer mobo dia kt aku, trus tak jadik.. dah ler offer murah² plak tuh.. juling jap aku.. hEhEhEhE

thanx bro takata..

takata tu bisness man.so bizi skit la.takpun tak berani tanggung risiko.aku pun tak berani.nanti ape2 korang salah kan aku.sendiri punye takpe laa

die tengah buat crazy sale kat ly tu...sayangnya die tak buat kat putera, kalau tak mesti aku sempat sambar cm aerogate die tu...

fuhh...

tenqiu kengkawan...byk ilmu nie

tak sangka aku warga putera nie dasyat2..

kalo tak dpt rma sure aku akan cuba nie...

p/s
sarge ko dok kat mane aaa???

aku nak tanya sikit. Kat mana nak cari bios cip tu? Aku ada 3 mobo yang dah kong
dia punya bios. Aku rasa kalau tukar dia punya bios boleh idup balik Mobo tu.

kat mane nak cari??/susah skit la.yg senang cari mobo yg sama.pastu gune BIOS chip tu utk hot swap

kalo mobo lama tuh lupakan jer la.. susah nak carik yg sama..