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Flash Bios Error

Discussão em 'Dúvidas e Suporte Técnico PC' iniciada por CDMan, 13 de Outubro de 2002. (Respostas: 6; Visualizações: 3159)

  1. CDMan

    CDMan Power Member

    Alguém sabe se, no caso de um flash à bios correr mal, existe alguma maneira de a recuperar, ou a motherboard vai directamente para o lixo? No caso de haver, como recuperá-la??? A board de que falo é uma DFI CA-61, Rev. B1. Hasta...
     
  2. slip_knot

    slip_knot Guest

    para resolveres isso tens de arrankar o computador com uma placa grafica ISA......com elas arrankas o pc sem bios na boa.......dps resta-te re-programar a bios...

    hasta... ***** coisa PM
     
  3. _BG_

    _BG_ I fold therefore I AM

    Boas!
    Encontrei isto na net e penso que é aquilo que procuras (não é necessária placa gráfica isa desde que sigas as instruções abaixo):



    PROCEDURE FOR RECOVERING A CORRUPT BIOS CHIP
    By David Oakley
    Amptron International Inc.

    1 - Recovering a Corrupt BIOS Chip

    There are two primary BIOS distributions used today they are AWARD, written by AWARD
    Software and AMI, which is written by American Megatrends International. The methods used to
    recovery your BIOS is different for each BIOS distribution, so it is crucial that your know which
    BIOS distribution you have.
    To determine which BIOS distribution you have you can either read the sticker that has been
    placed on top of your BIOS chip, consult the user’s manual, or contact the motherboard
    manufacturer. I will elaborate on each of these methods below.


    2 - Identifying Your BIOS Distribution

    The quickest way to identify which BIOS distribution you are using when you can not boot the
    computer is to read the manufacturers sticker on top of the BIOS chip itself. To do this you must
    first locate the BIOS chip on the motherboard. Currently there are two popular BIOS chip package
    types in use, 32-pin DIP (Dual In-line Package) and 28-pin PLCC (Plastic Leaded Chip Carrier).
    The most common is the 32-pin DIP type so this is what you should look for first. The DIP
    package type chips are rectangular black silicon chips with a row 16-pins along both sides of the
    chip. The PLCC chips are smaller square chips that are closely fitted into a plastic socket on the
    motherboard. The PLCC type chips have a total of 28 pins, which are inline on all sides of the
    chip.
    Standard 32-Pin Dual In-line Package (DIP) Standard 28-Pin PLCC Package
    The motherboard manufacturer usually places a sticker on top of the BIOS chip, which specifies
    the BIOS distribution. The stickers will either say AWARD! or AMI. This is the information your
    need. You have now identified the BIOS distribution for your system.
    Another easy way to identify your BIOS is by checking the user’s manual. The manual does not
    generally mention the type of BIOS you have, but in most cases it will include screen shots
    (pictures) of the BIOS Setup Utility, which shows the BIOS name at the top. In your manual there
    should be a section that discusses how to setup your BIOS. Read the BIOS setup section and
    pay close attention to the illustrations. The following is an example of information taken from a
    screen shot in a motherboard user’s manual.

    AMIBIOS SIMPLE SETUP UTILITY – VERSION 1.20
    ©1998 American Megatrends, Inc. All Rights Reserved

    This motherboard obviously uses AMI BIOS.
    The third and final way to identify your BIOS is to call the motherboard manufacturer and ask.
    This is often a pretty simple approach, but it is not uncommon for motherboards of the same
    model to use different BIOS distributions.


    3 - Recovering a Corrupt AMI BIOS chip

    With motherboards that use BOOT BLOCK BIOS it is possible to recover a corrupted BIOS
    because the BOOT BLOCK section of the BIOS, which is responsible for booting the computer
    remains unmodified. When an AMI BIOS becomes corrupt the system will appear to start, but
    nothing will appear on the screen, the floppy drive light will come on and the system will access
    the floppy drive repeatedly. If your motherboard has an ISA slot and you have an old ISA video
    card lying around, put the ISA video card in your system and connect the monitor. The BOOT
    BLOCK section of the BIOS only supports ISA video cards, so if you do not have an ISA video
    card or your motherboard does not have ISA slots, you will have to restore your BIOS blind, with
    no monitor to show you what’s going on.
    AMI has integrated a recovery routine into the BOOT BLOCK of the BIOS, which in the event the
    BIOS becomes corrupt can be used to restore the BIOS to a working state. The routine is called
    when the SYSTEM BLOCK of the BIOS is empty.
    The restore routine will access the floppy drive looking for a BIOS file names AMIBOOT.ROM,
    this is why the floppy drive light comes on and the drive spins. If the file is found it is loaded into
    the SYSTEM BLOCK of the BIOS to replace the missing information.
    To restore your BIOS simply copy a working BIOS file to a floppy diskette and rename it
    AMIBOOT.ROM, then insert it into the computer while the power is on. The diskette does not
    need to be bootable or contain a flash utility. After about four minutes the system will beep four
    times. Remove the floppy diskette from the drive and reboot the computer.
    The BIOS should now be restored.


    4 - Recovering a Corrupt AWARD BIOS

    With AWARD BIOS the process is similar but still a bit different. To recover an AWARD BIOS you
    will need to create a floppy diskette with a working BIOS file in .BIN format, an AWARD flash
    utility and an AUTOEXEC.BAT file. AWARD BIOS will not automatically restore the BIOS
    information to the SYSTEM BLOCK for this reason you will need to add the commands necessary
    to flash the BIOS in the AUTOEXEC.BAT file. The system will run the AUTOEXE.BAT file, which
    will in turn flash the BIOS. This is fairly easy. Here are the steps you need to take.
    · Create a bootable floppy diskette
    · Copy the BIOS file and flash utility to the diskette
    · Create an text file with any standard text editor and add the following lines

    @ECHO OFF
    FLASH763 BIOSFILE.BIN /py

    In the above example I am assuming that you are using the FLASH763.EXE flash utility. You will
    need to replace the FLASH763 with the name of whatever flash utility you are using, and replace
    the BIOSFILE.BIN with the name of the BIOS file you are using. You will also need to change the
    ‘/py’ to whatever the command is for your flash utility to automatically program the BIOS without
    user intervention.
    If you do not know the command to automatically flash your BIOS type the name of the flash
    utility with a space and then /? to display the utility’s help screen. The help screen should specify
    the command switch to automatically flash your BIOS. If you are using the FLASH763.EXE utility
    then the switch to automatically flash your BIOS is ‘/py’.


    Espero ter ajudado. Se tiveres alguma dúvida é só perguntar ;)

    PS: Desculpem lá por tão longa resposta mas tinha de ser :D
     
    Última edição: 14 de Outubro de 2002
  4. Tecnoboy

    Tecnoboy Power Member

    Green_Beret so ha um pequenino problema com isso que disses-te, e que se a BIOS estiver estragada o pc nem arranca, logo nao se pode utilizar diskette de arranque porque o sistema nem a vai buscar. Lembrem-se que e na BIOS que se define as drives e ordem pla qual o sistema deve arrancar...
     
  5. _BG_

    _BG_ I fold therefore I AM

    Tecnoboy, concordo a 100% com o que disseste mas eu parti do principio de que o chip da bios estava bom (o CDMan não disse mais nada...).
    Penso que se o chip da bios tiver pifado é melhor pensar em comprar uma board nova :(
     
  6. Tecnoboy

    Tecnoboy Power Member

    Tendo em conta o que ele disse: "no caso de um flash à bios correr mal" -> Nao sei se ja te aconteceu, mas se flashares mal uma bios, ela fica inutilizavel, e para arrancares com o pc, ele percisa dela a funcionar, para poder fazer o bootup e ir buscar a informaçao ao disco rigido ou drive de diskettes, ou seja, se a bios for mal flashada o pc vai deixar de funcionar ! Por isso mesmo e que exitem empresas direccionadas somente para venda de chips de bios com copias originais para quase tds as motherboards existentes ! E nao fica barato...
     
  7. _BG_

    _BG_ I fold therefore I AM

    Por acaso já flashei a bios da minha board mas correu tudo bem :D

    Bem... agora conseguiste-me por confuso :(
    Então porque diabo alguém se deu ao trabalho de escrever o guia que apresentei?

    PS: A não ser que seja destinado ao pessoal que flashou a bios com a actualização errada (ou de outra board, p. ex.)
     

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