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New theory/story: Bios is dead ! Possible evidence: CPU Fan spins slowly.

Discussion in 'Electronic Design' started by Skybuck, Jun 4, 2007.

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  1. Skybuck

    Skybuck Guest


    The BIOS chip could be dead.

    Possible evidence:

    When turning on the power the cpu fan spins slowly ?!

    (Some have said the cpu fan is controlled by motherboard and spins up
    to full speed (?))

    Possible invalid evidence:

    Graphics cards fans spin up to 100%, this is probably invalid evidence
    since these fans could be controlled by the cards themselfes ?!

    ^^^ These do spin up last time I checked ^^^

    Possible causes for dead bios:

    1. Bios attack from "crack".

    2. Bios corruption from many resets because of system freeze. (Maybe
    power surges)

    3. Bugged beta bios killed it.

    4. Flashing could be bad, some transistors failed to be flashed

    5. Bad quality of bios chip. (Possibly refurbished motherboard (?))

    6. Bios chip damaged by touching it.

    7. Wrong settings killed bios chip (?).

    8. Too much heat killed bios chip (?).

  2. Eeyore

    Eeyore Guest

    "Crack" is what you're on.

  3. Skybuck

    Skybuck Guest

    I wish I was then it was all a gigant illusion ;)

    And everything would be fine as the crack's effects were out ;)

    Skybuck =D
  4. Paul

    Paul Guest

    I'm waiting for you to stop crossposting, so someone can help you.
    This doesn't belong in Try posting *only*
    to the alt.comp.periphs.mainboard.asus group, and then someone can
    walk through a test procedure..

  5. Craig Sutton

    Craig Sutton Guest

    For gods sake.. get over the fixation of fans, static and bios chips..

    You havn't even done the most simple of checking procedures. Which would be
    checking the power supply or trying with another one.

    Or disconnect all the unecessary extra components such as all the extras

    Before faffing around with bios chips and pulling out motherboards and what
    not It would of been the first thing I would of checked.
  6. This explains the problem completely:

  7. Maus

    Maus Guest

  8. Another possible cause, Motherboard Logo program corrupted the bios.
  9. John Larkin

    John Larkin Guest

    The more you muck with this board, the more damage you are going to
    do. You don't have 5% of the knowledge or the tools to work on
    something this complex. Either get a new motherboard, or send this one
    back for repair. Expect to pay for repair, as you have likely voided
    the warranty by messing with it.

    And please don't post this endless tale of woe to s.e.d. It's actually
    not appropriate.

  10. Jim Yanik

    Jim Yanik Guest

    My PC(900Mhz Athlon) was having trouble BECAUSE of a bad PC fan.
    It was loading the PS and causing reboots.And the fan was still turning at
    speed,not slow.
  11. default

    default Guest

    First check the CMOS battery. Most will run with a dead battery but
    it is a pain having to enter the settings every time you power it up.

    What are the Power On Self Test codes telling you? The computer
    should beep the internal speaker one time if everything is working.
    More than once means you have a problem - the motherboard manual
    should tell you what the beeps are indicating is wrong. Research POST
    codes for the mobo you have if that's the case. The POST is there so
    you have some way to troubleshoot if the display or keyboard is having

    If it beeps once and fails to boot, but the screen comes up, use the
    start up disc, your master boot record must be damaged. The boot
    record is corrupt, missing or not where the BIOS expects to find it.

    There's a DOS command for restoring the master boot record, RMBR, but
    it depends on your version of windows or what OS you are using.
    Research the problem if that's the case. Drive overlays, and added
    stuff like PCI hard drive controllers may require a non standard boot
    for everything to function properly. Plain vanilla computers are
    easier to fix.
    Unlikely. You're the computer expert - certainly you didn't kill it.
    Lightening and Tesla coils can write to the bios settings on my
    system, but they only change the date time, and maybe at worse, I'll
    have to re detect the hard drives. That last has only happened once.
    Are you flashing the BIOS? That is asking for trouble with most
    motherboards. You said something about an Asus board in one post,
    they are supposed to be almost idiot proof with their flashing system.
    The ONLY time one flashes a BIOS is to upgrade to allow it to handle
    some piece of added hardware or to eliminate a bug in the original
    flashing - Flashing the BIOS is a last resort no matter how good you
    are with computers. Last resort - means you have already spare BIOS
    in one hand or a back up computer and really, really, need it.

    Best plan is don't flash - unless of course you bought an ASUS with
    the foolproof flashing and bad flash recovery.
    Anything is possible
    You were wearing your "summer shoes" again and shuffling across the
    Wrong settings are common - they will make it look like the BIOS or
    MoBo is bad - but there's usually a choice somewhere in the BIOS setup
    that allows one to chose default settings - to bring it back to
    something that should work, then you just have to choose "detect hard
    drives" or enter the number of heads and cylinders from the HDD spec
    sheet manually.
    The BIOS itself runs cool, it doesn't do much except start the
    computer and hold the settings, it doesn't use a lot of power - they
    have to run on batteries for back up. If the BIOS dies from heat, it
    would probably be due to another source of heat - a hard drive or
    processor is more likely to die of heat, it generates.
  12. Skybuck

    Skybuck Guest

    It's the most likely problem honey ;)
    To risky to **** around with my other computers I need them ;)

    The green light on the motherboard is on indicating the power supply
    is ok ?!

    Well duh, ofcourse I already disconnected as much as possible, except
    the 4 GB chips... I simply left those in ;)

    Now the motherboard is out though, I am done with testing and trying
    to get it to work... first I might need replacement parts.
    Been there done that :)

  13. Skybuck

    Skybuck Guest

    The motherboard should be well designed to take my tiny little
    beating ;)

  14. James Beck

    James Beck Guest

    Nope, just standby voltage is present.
    Not an indicator that the voltage is good/correct, so on.

    Swapping the power supply out is always a good start.

  15. w_tom

    w_tom Guest

    Maybe. But more changes may only exponentially complicate the
    problem. BIOS does not operate until it receives a signal from the
    power supply controller. The power supply 'system' (which is more
    than just a power supply) can be completely defective and still a
    light glows; fan spins. There is no way around numbers. There is no
    way around first confirming the power supply 'system' is functional.
    That is two minutes with a 3.5 digit multimeter - a tool so ubiquitous
    as to be sold even in Kmart (and Radio Shack, Lowes, Tru-value
    Hardware, Sear, Wal-Mart, Home Depot....)

    Procedure is posted in "When your computer dies without
    warning....." starting 6 Feb 2007 in the newsgroup

    Use numbers in that discussion AND post numbers here for further
    information (and to learn what those numbers say).

    Never swap parts or change wires until a suspect has been
    identified. Two minutes with a meter will either accuse or exonerate
    the power supply 'system'. Only then are you ready to move on to
    other suspects. Doing it this way means you know what is good and
    what is definitively bad. Currently, everything remains unknown - the
    third state.

    Get the meter. Use the procedure. Report back the numbers. Two
    minutes to uncomplicated a problem.
  16. Ron Krebs

    Ron Krebs Guest

    The answer is simple. The motherboard is dirty. Carefully place the board
    into a plastic tub half-filled with hydroflouric acid (5% solution) and
    allow it to soak for 24 hours. If you're really in a hurry, make it 50%
    solution. This will thoroughly clean the bios contacts and, well,
    everything else on the board with remarkable results. It also works wonders
    on you car windows.

  17. Marra

    Marra Guest

    Just change the fecking motherboard and stop harassing us !
    You cant fix it !
  18. Jamie

    Jamie Guest

    ha, you didn't pull the memory ?
    you should at least do that to see if you get the memory error code beep !
    if so, that would tell you that you have a bad chip.
  19. Skybuck

    Skybuck Guest

    Nope, I have no reason to believe it's damaged.
    Risky, might damage memory modules.

    Can the motherboard operate without memory modules ?

    I was under the impression computers need memory to operate ?!
    That's a possibility I would rather not think about ;)

    Does it beep if there is no CPU in it as well ?

  20. Are you witnessing sound corruption ?

    Why would boot fail because a memory chip is damaged ?

    Won't the motherboard simply p
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