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    msk123p's Avatar
    msk123p Posts: 2, Reputation: 1
    New Member
     
    #1

    Nov 15, 2009, 08:27 PM
    How to unlock bios admin password on dell d420
    I have dell latitude d420

    Need master code to reset the bios.

    Service tag ;#3XLVP1S-595B

    I can't boot from any cd,usb,hard drive.

    Help me.
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
    Ultra Member
     
    #2

    Nov 15, 2009, 08:42 PM

    Here's a link to a site where you can download "CmosPwd". It's free. It claims to be able to determine master passwords on machines such as yours. I haven't tried it so I can't vouch for it.

    CmosPwd - CGSecurity

    In the past, we used to simply remove the CMOS battery or disconnect it from the computer (often a jumper) and short the CMOS connections (also a jumper) to reset the CMOS memory back to its default. The usual default is no password. This may still be able to be done if CmosPwd doesn't work.
    goto55's Avatar
    goto55 Posts: 1, Reputation: 1
    New Member
     
    #3

    Sep 1, 2011, 05:27 AM
    Get a master password at http://bios-unlock.com/http://bios-unlock.com/
    Most dells use the service tag to generate a bios password.

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