P4B266-C Boot Problem - Won't Scan Boot Devices

Discussion in 'Asus' started by Parallax Abstraction, Nov 14, 2003.

  1. Hey all! This is kind of urgent as it's for a client of mine so I
    hope someone knows the answer. He has an Asus P4B266-C with a P4
    1.8Ghz and 512MB DDR266. The system has been working fine for quite
    some time, but recently developed a problem. The system goes through
    the POST procedure fine and gets to dispalying PCI devices. However,
    the system halts there. It doesn't start seeking boot devices though
    the floppy light remains on from the seek the BIOS does. This just
    starting for my client suddenly two weeks ago. Yesterday, I resolved
    the problem by clearing the BIOS and redoing the settings. I also
    flashed the BIOS from 1002 to 1006. It worked for a day and now it
    has started doing it again. Has anyone seen this before and does
    anyone know what causes it or how to fix it? When his system boots,
    it runs fine with no instability whatsoever. However, now it isn't
    booting at all. Can anyone help me out?! Thanks all!
    Parallax Abstraction, Nov 14, 2003
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  2. Parallax Abstraction

    Paul Guest

    Simplify the problem by removing the PCI cards, until you can get
    it to post. Perhaps one of the PCI cards is busted and is hauling
    the PCI bus down ?

    If you own a PCI "POST" debugging card, with the two digit hex display
    on it, insert the debugging card in a spare PCI slot, and see where
    the BIOS is halting.

    Run your hand over the surface of the motherboard and check for any
    components that are burning hot.

    Take a voltmeter and check the supply rails. If you can get back
    into the BIOS, it is easier to use the hardware monitor in the BIOS
    to do this.

    Paul, Nov 14, 2003
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  3. Parallax Abstraction

    DaveW Guest

    It sounds like the chipset may have developed a thermal fault.
    DaveW, Nov 15, 2003
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