hp elitebook 840 g4 need password unlock

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  • peste
    Super Moderator
    • Dec 2016
    • 12226
    • ROMANIA

    #221
    Originally posted by mp2172
    Hi, could someone please help me with HP EliteBook 840 G4, sn - 5CG7105G3M
    read..https://www.badcaps.net/forum/troubl...before-posting
    post the 16 MB bios
    Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

    >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

    Every donation made will go towards server fees and maintenance costs.

    Comment

    • mp2172
      New Member
      • Feb 2024
      • 5
      • UK

      #222
      Originally posted by peste
      How do I post the 16MB bios?

      Comment

      • SMDFlea
        Super Moderator
        • Jan 2018
        • 20276
        • UK

        #223
        Originally posted by mp2172
        How do I post the 16MB bios?
        You will need an SPI bios programmer to make a backup of the chip.The chip is in a WSON8 package,so you will need to desolder it first ,then put it into a WSON8 adapter or alternatively use a WSON8 pogo adapter (unreliable YMMV) .Then read the chip a few times,check to make sure you`ve made a good backup, then post it here inside a zip or rar attachment and also post the laptop serial number.

        1. How to dump and flash
        1.1. BIOS
        https://www.badcaps.net/forum/troubl...21#post1622421
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        • mp2172
          New Member
          • Feb 2024
          • 5
          • UK

          #224
          Originally posted by SMDFlea

          You will need an SPI bios programmer to make a backup of the chip.The chip is in a WSON8 package,so you will need to desolder it first ,then put it into a WSON8 adapter or alternatively use a WSON8 pogo adapter (unreliable YMMV) .Then read the chip a few times,check to make sure you`ve made a good backup, then post it here inside a zip or rar attachment.

          1. How to dump and flash
          1.1. BIOS
          https://www.badcaps.net/forum/troubl...21#post1622421
          Thank you. So basically, RCUnlocker or any other tool can't bypass/reset the Administrator BIOS password without removing the chip?

          Comment


          • SMDFlea
            SMDFlea commented
            Editing a comment
            "or alternatively use a WSON8 pogo adapter (unreliable YMMV)" .The most reliable way is to desolder the chip using a hot air station.
        • peste
          Super Moderator
          • Dec 2016
          • 12226
          • ROMANIA

          #225
          Originally posted by mp2172

          How do I post the 16MB bios?
          down right.....QUOTE, bottom left..Upload Attachments..etc...
          Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

          >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

          Every donation made will go towards server fees and maintenance costs.

          Comment

          • Echoo
            Senior Member
            • Apr 2018
            • 77
            • Budapest

            #226
            Hello!

            I tried unlocking the 840 G4 bios because it was password protected. He no picture since then! I uploaded both the original dump and the unlocked file! Please help!​

            Attached Files

            Comment

          • bilal767
            Member
            • Feb 2023
            • 43
            • United Kingdom

            #227
            Hi,
            Can anyone please unlock this bios. I have tried with RCunlocker 4/5 times but every time I get error " Missing unlockable contents"

            SN/ 5CG91119F7
            Model HP EliteBook 840r G4
            Attached Files

            Comment

            • rex98
              Badcaps Legend
              • Feb 2023
              • 1234
              • Mandaue CEBU, Philippines

              #228
              Originally posted by bilal767
              Hi,
              Can anyone please unlock this bios. I have tried with RCunlocker 4/5 times but every time I get error " Missing unlockable contents"

              SN/ 5CG91119F7
              Model HP EliteBook 840r G4
              your bios is corrupt. read again

              Comment

              • bilal767
                Member
                • Feb 2023
                • 43
                • United Kingdom

                #229
                Originally posted by rex98

                your bios is corrupt. read again
                Thanks, after few tries I was able to read whole bios and unlocked using RCunlocker

                Comment

                • bilal767
                  Member
                  • Feb 2023
                  • 43
                  • United Kingdom

                  #230
                  Hi,
                  Can anyone please unlock the following bios. I have tried with RCunlocker and its says unlocked but after writing it back, the password comes back.
                  S/N: 5CGB4411N5
                  HP EliteBook 840r G4
                  Attached Files

                  Comment

                  • peste
                    Super Moderator
                    • Dec 2016
                    • 12226
                    • ROMANIA

                    #231
                    Originally posted by bilal767
                    Hi,
                    Can anyone please unlock the following bios. I have tried with RCunlocker and its says unlocked but after writing it back, the password comes back.
                    S/N: 5CGB4411N5
                    HP EliteBook 840r G4
                    see on the motherboard if you still have a bios chip.. on both sides..
                    Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                    >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                    Every donation made will go towards server fees and maintenance costs.

                    Comment

                    • bilal767
                      Member
                      • Feb 2023
                      • 43
                      • United Kingdom

                      #232
                      Originally posted by peste

                      see on the motherboard if you still have a bios chip.. on both sides..
                      Yes there is another chip similar to this one? Do I need to unlock the other chip using RCunlocker? Thanks for your help

                      Comment

                      • peste
                        Super Moderator
                        • Dec 2016
                        • 12226
                        • ROMANIA

                        #233
                        Originally posted by bilal767

                        Yes there is another chip similar to this one? Do I need to unlock the other chip using RCunlocker? Thanks for your help
                        better post the other one here... and we'll see..
                        Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                        >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                        Every donation made will go towards server fees and maintenance costs.

                        Comment

                        • uusr
                          New Member
                          • Jul 2024
                          • 3
                          • DE

                          #234
                          Hi,
                          Can anyone please unlock the following bios. I have tried with RCunlocker and its says unlocked but after writing it back, the password comes back.
                          S/N: 5CG8113HM6
                          HP EliteBook 840 G4
                          ​

                          Comment

                          • peste
                            Super Moderator
                            • Dec 2016
                            • 12226
                            • ROMANIA

                            #235
                            Originally posted by uusr
                            Hi,
                            Can anyone please unlock the following bios. I have tried with RCunlocker and its says unlocked but after writing it back, the password comes back.
                            S/N: 5CG8113HM6
                            HP EliteBook 840 G4
                            ​
                            post both bios here..
                            Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                            >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                            Every donation made will go towards server fees and maintenance costs.

                            Comment

                            • uusr
                              New Member
                              • Jul 2024
                              • 3
                              • DE

                              #236
                              Originally posted by peste

                              post both bios here..
                              Reading done with Neoprogramer 2.2.0.10

                              Attached Files

                              Comment

                              • peste
                                Super Moderator
                                • Dec 2016
                                • 12226
                                • ROMANIA

                                #237
                                Originally posted by uusr

                                Reading done with Neoprogramer 2.2.0.10
                                try..After entering bios go to security tab and reset security settings to default...
                                bios128_unlocked.rar

                                Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

                                >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

                                Every donation made will go towards server fees and maintenance costs.

                                Comment

                                • uusr
                                  New Member
                                  • Jul 2024
                                  • 3
                                  • DE

                                  #238
                                  Originally posted by peste

                                  try..After entering bios go to security tab and reset security settings to default...
                                  [ATTACH]n3318503[/ATTACH]
                                  This is brilliant, everything works, how much do I owe you?

                                  Comment

                                  • SMDFlea
                                    Super Moderator
                                    • Jan 2018
                                    • 20276
                                    • UK

                                    #239
                                    Originally posted by uusr

                                    This is brilliant, everything works, how much do I owe you?
                                    Its free, you don`t owe anything
                                    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                    Comment

                                    • kafarda
                                      Member
                                      • Jul 2019
                                      • 21
                                      • Nigeria

                                      #240
                                      My Bios is Password protected, Help me clear the password please.
                                      HP EliteBook 840 G4
                                      Attached Files

                                      Comment

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