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  • #2297120

    I’d like to change the BIOS password

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    by johngrammatico ·

    I found an old computer (1998)and I’d like to remove or bypass the bios password. Booting to setup say’s “ENTER PASSWORD”. How do I get around this so I can make my BIOS changes?

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    • #2686086

      Reply To: I’d like to change the BIOS password

      by carlos.nino ·

      In reply to I’d like to change the BIOS password

      I’m sure you’ll find this page usefull:

      http://www.labmice.net/articles/BIOS_hack.htm

    • #2685500

      Reply To: I’d like to change the BIOS password

      by mikelazz ·

      In reply to I’d like to change the BIOS password

      Open up the machine. Remove the the jumpers that connect the power supply to the motherboard. Replace after about 10 seconds.

    • #2685435

      Reply To: I’d like to change the BIOS password

      by overmod ·

      In reply to I’d like to change the BIOS password

      I believe Answer 2 will work better if you disconnect
      the onboard motherboard battery first! (Also, I’d
      disconnect the other devices on the board, and
      empty the slots, before pulling the PS connector, just
      in case… but that’s probably more paranoia than
      engineering…) There may also be some reserve
      power elsewhere on the board — IIRC some non-PC
      computers, notably older Sun boxes, have a small
      battery built into the BIOS chip itself — so it might take
      more than a few seconds without power for the
      reset to work.

      Be careful when you do this, however — some older
      computers (though probably not as recent as 1998)
      have no autodetect for hard drive type, and you
      would need to know some rather specific
      information to get the old HD to work when the
      computer comes back up. (If it’s an IDE drive, you
      probably have autodetect, but it pays to know the
      information anyway…

      Some motherboards provide a set of jumper pins
      that perform this reset — you short them for a
      particular length of time, and CMOS (including the
      access password) is cleared to defaults. This might
      be a bit less extreme than removing all power.

      Understandably this information can be a bit hard
      to come by! See if any Web sources have
      information, manuals, etc. for your specific
      motherboard… I had several older machines (486s)
      with this feature, and I put a small note inside the
      case so that anyone who got the machine after me
      would know how to work the secret features…

    • #2685095

      Reply To: I’d like to change the BIOS password

      by c.caffee ·

      In reply to I’d like to change the BIOS password

      you will need to reset the bios. check the web for the make /model of the MB they “should” have the jumpers. short the CMOS JUMPER and your in buisness.

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