BadBIOS/EEPROM chip

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  • Crapacitance
    New Member
    • Jun 2014
    • 2
    • England, United Kingdom
    #1

    BadBIOS/EEPROM chip

    I badly flashed a BIOS chip. Bought a CH341A EEPROM programmer and 8 pin test clip, attached it to the chip on the motherboard and read it - returned values were all 00 00 00 00, attempted erase but when checking if it was blank I got an error message saying "The chips are not null", when trying to write the original BIOS.bin or anything at all to it I got "The chip and contents are in disagreement."
    The program I am using is called "CH341A Programmer"

    Is the EEPROM chip broken and needs replacing?
    Can I force the chip to reset itself to NULL status, perhaps by shorting two of the contacts and applying power to the motherboard?
    Motherboard is M2N68-LA Narra3 (Hewlett Packard)
    EEPROM is Winbond W25x80VSIG (Phoenix BIOS)
    Tags: None
    • Agent24
      I see dead caps
      • Oct 2007
      • 4981
      • New Zealand
      #2
      Re: BadBIOS/EEPROM chip

      You can reset the BIOS settings but there is no way to blank a chip without the proper command through the SPI interface.

      I would suspect it may be because you are trying to do it while the chip is in-circuit.
      "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
      -David VanHorn

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