panasonic cf31 bios password removal

Discussion in 'BIOS Mods' started by geep6, Oct 19, 2015.

  1. geep6

    geep6 MDL Novice

    Aug 28, 2007
    is there any way to remove the bios password on a cf31 this is at boot up system lock
  2. cocachris89

    cocachris89 MDL Senior Member

    Mar 1, 2013
    #2 cocachris89, Oct 19, 2015
    Last edited: Oct 19, 2015
    You can try removing the BIOS battery to clear the CMOS. You could also try forcing a bios update with a DOS boot cd to remove the password.

    If that doesn't work, you'll need to contact panasonic.
  3. BoobyTrap

    BoobyTrap MDL Novice

    Oct 24, 2015
    I agree with cocachris89. Removing the bios battery for 1 min will solve the issue. However the laptop is rugged I think. You'll need special equipment to open it and reassable it. If you have never opened a computer before I suggest not to try it.
  4. J Cooper

    J Cooper MDL Novice

    Jan 27, 2018
    Having a CF31 Mk1 (the same goes for the full CF31 range, and the CF19 range of laptops) with a bios password enabled, I contacted Panasonic service to find out how to disable the password as it has been long forgot. Panasonic made it clear that as the laptop is designed for military and high security use, the use of software or removing the CMOS battery doesn't work. Yes... I tried these methods but the password is held in PROM on the motherboard. Panasonic will for a fee "plus shipping and handling" replace the motherboard with a refurbished one as there is no method of removing the BIOS password in the field.
    Lots of persons are assuming these laptops are complainant with lesser home user versions, but remember these are built for Military and Police, not the general end user, therefore the security features installed are in hardware not software where bios is concerned.
    Don't panic, if your Laptop is legal and not on the Panasonic global hot list, Panasonic will make the relevant hardware changes noted above "at a cost".
  5. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
    get a full bios dump for a programmer like ch341A and the rest is history. ( some toughbooks have the bios chip on a small daughterboard easy to replace)