Dell latitude 7420 need clean bios

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • kaled aaaa
    New Member
    • Feb 2016
    • 4
    • france

    #81
    Originally posted by LBTT1121

    try and feedback
    Thank you so much. It works perfectly

    Comment

    • Freja
      New Member
      • Aug 2025
      • 4
      • DE

      #82
      Hello,
      i need a clean bios too please.
      Service Tag: J914DB3
      Bios Revision 1.41.0

      Comment

      • SMDFlea
        Super Moderator
        • Jan 2018
        • 21907
        • UK

        #83
        Originally posted by Freja
        Hello,
        i need a clean bios too please.
        Service Tag: J914DB3
        Bios Revision 1.41.0
        Clean ? ,explain what the problem is and post your backups
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        • Freja
          New Member
          • Aug 2025
          • 4
          • DE

          #84
          Originally posted by SMDFlea

          Clean ? ,explain what the problem is and post your backups
          Hi, my Problem is the forgotten admin Bios Password
          Iยดll post the Backup asap i found a way to dump the Bios.

          thx

          Comment

          • Freja
            New Member
            • Aug 2025
            • 4
            • DE

            #85
            Originally posted by Freja

            Hi, my Problem is the forgotten admin Bios Password
            Iยดll post the Backup asap i found a way to dump the Bios.

            thx
            Oh Lord, is someone that kind and can help me to dump my BIOS?
            Which tool? Many Thanks.

            Comment

            • LBTT1121
              Badcaps Legend
              • Nov 2024
              • 1000
              • Viแป‡t Nam

              #86
              Originally posted by Freja

              Oh Lord, is someone that kind and can help me to dump my BIOS?
              Which tool? Many Thanks.
              try post 76

              Comment

              • Freja
                New Member
                • Aug 2025
                • 4
                • DE

                #87
                Originally posted by LBTT1121

                try post 76
                Thank you for the hint.
                Which tool can i use? The F12 method asks me for Password.
                I also tried the latest offical bios update from dell and the password is also needed.

                Comment

                • metla
                  New Member
                  • Oct 2025
                  • 1
                  • Macedonia

                  #88
                  Hallo,

                  Latitude 7420 11th gen
                  sn: /85L64M3

                  It's lock with systems administration password and i can't login in Bios and boot menu.
                  We need to break the password .
                  Can you help me ?
                  Thank you .

                  Comment

                  • LBTT1121
                    Badcaps Legend
                    • Nov 2024
                    • 1000
                    • Viแป‡t Nam

                    #89
                    Originally posted by metla
                    Hallo,

                    Latitude 7420 11th gen
                    sn: /85L64M3

                    It's lock with systems administration password and i can't login in Bios and boot menu.
                    We need to break the password .
                    Can you help me ?
                    Thank you .
                    post the original contents of the bios chip..not the update on the website..
                    The bios chip must be unsoldered from the board before writing or reading..
                    do not use the clip, you may have errors..if you do not have anything to unsolder it with,
                    solder wires between the programmer and the bios chip..

                    you need an SPI programmer

                    Comment

                    • essaadi
                      Senior Member
                      • May 2016
                      • 52
                      • MOROCCO

                      #90
                      Originally posted by farouk_1994
                      Re: Dell latitude 7420 need clean me

                      Dell latitude 7420 need clean me for who need it
                      It works for me perfectly.
                      Thank you very much.

                      Comment

                      Related Topics

                      Collapse

                      • Jeff'sTech
                        Dell Latitude 7420 BIOS Unlock Gone Wrong
                        by Jeff'sTech
                        Hello everyone.

                        I have come here with a rather specific question. I was given a Dell Latitude 7420 laptop with a busted screen, and wanted to see if I could refurbish it into my daily driver. I wanted to experiment and see if a 2-in-1 display would work as the chassis of the laptop and 2-in-1 7420 looked identical. I threw in the display and my hypothesis was correct, however, I was greeted with a locked BIOS and since I didn't know the password, I figured I'd try to unlock it somehow. I bought one of those POGO pin probe things for my CH341A programmer so I could read and make...
                        11-08-2023, 03:30 PM
                      • Akhlz001
                        Dell Pro 13 Plus PB13250 Bios Unlock
                        by Akhlz001
                        Hi,

                        Could someone help trying to unlock this BIOS, seems that Dell have changed the layout of new Dell Pro 8FC8 bioses from checking HXD - 4000 bits do not need changing, only 2000. However after FF the section starting from '01000' upto 2000 bits and then soldering the chip back it seems that the microchip on the motherboard is recovering the bios back to original settings after first boot. Has anyone found a way to crack this extra layer of security Dell have implemented? Seems both HP and Dell have upped bios security to match Lenovo by implementing extra measures on a separate...
                        09-20-2025, 07:15 PM
                      • gizaha
                        Dell Latitude 5580 possible bios corruption
                        by gizaha
                        Dell latitude 5580, motherboard cdp 80 la-e151p

                        3 amber 3 white blinks. Dell website sais it's problem "bios recovery" and suggested solution "recovery image not found"
                        (from here https://www.dell.com/support/manuals...e7a&lang=en-us)

                        I try plugging charger while pressing ctrl+esc, machine turns on, nothing and after 20 seconds it gives 3 amber 3 white blinks again.

                        Since ssd is replaced and had clean install windows, i've...
                        02-13-2024, 07:18 AM
                      • Document Archive
                        DELL Latitude 7420 Notebook 7000 Specification for Upgrade or Repair
                        by Document Archive
                        This specification for the DELL Latitude 7420 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 7420 boardview and 7420 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 7420...
                        09-07-2024, 01:30 AM
                      • jhanra
                        Dell Latitude 5400 Chromebook UEFI bios
                        by jhanra
                        Hi there masters, recently i got a dell 5400 chromebook and wanted to install windows, i searched the internet and i found out other people also wanting a UEFI bios for this model, i searched there is a R/W legacy, but there are bugs like keyboard/trackpad not working, and hard to install.

                        so i decided to try to port one, this bios is based on dell 5400 windows version, i am testing this bios for a week now an found only a little to no bug at all in windows 10, or only a minor issue
                        in windows 11 sound driver compatibility, but overall its ok, for me i can deal with it, ๐Ÿ˜…๐Ÿ˜…๐Ÿ˜…...
                        11-02-2024, 04:19 AM
                      • Loading...
                      • No more items.
                      Working...