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help me dell 7320-7420 PASS

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    #61
    Re: help me dell 7320-7420 PASS

    Originally posted by Vesko356 View Post
    It's under warranty. Contact Dell Support for assistance with proof of purchase.
    Actually I've managed to modify the bios to clean the lock but I don't know exactly how. Very strange.

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      #62
      Re: help me dell 7320-7420 PASS

      Thank you for the file, Unfortunately while soldering to the board I shifted few components and laptop won't power on anymore even bios and components are soldered back.

      I have got one more laptop with identical motherboard (Dell Latitude 7320). Could you pls unlock the dump file attached for me? I have a private repair shop and learning the stuff. What method you use to clear the pass? Are you able to find it inside the file? You are my saviour with both cleared bioses. Thank you again in advance.
      Last edited by SMDFlea; 04-10-2023, 10:54 AM.

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        #63
        Re: help me dell 7320-7420 PASS

        Originally posted by Ferimonka View Post
        Thank you for the file, Unfortunately while soldering to the board I shifted few components and laptop won't power on anymore even bios and components are soldered back.

        I have got one more laptop with identical motherboard (Dell Latitude 7320). Could you pls unlock the dump file attached for me? I have a private repair shop and learning the stuff. What method you use to clear the pass? Are you able to find it inside the file? You are my saviour with both cleared bioses. Thank you again in advance.
        Dell Latitude 7320
        Last edited by SMDFlea; 04-10-2023, 10:54 AM.


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          #64
          Re: help me dell 7320-7420 PASS

          Thank you. I programmed the data to the chip and soldered back. Now I can't see any light on and measuring the bios chip pins voltage has changed to 1.8v instead 3.3 Does it needs to be activated somehow or I burned something out again? Thank you for help.

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            #65
            Re: help me dell 7320-7420 PASS

            Originally posted by Ferimonka View Post
            Thank you. I programmed the data to the chip and soldered back. Now I can't see any light on and measuring the bios chip pins voltage has changed to 1.8v instead 3.3 Does it needs to be activated somehow or I burned something out again? Thank you for help.
            What ? How can it change from 3.3 vol to 1.8 vol ? What's code name of chip ? Just to be sure on first boot you have to go into bios settings to disable all security options.
            Last edited by hoaca388; 07-17-2022, 08:26 AM.


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              #66
              Re: help me dell 7320-7420 PASS

              The voltage changed on the 7420 motherboard as well. It looks like I burned something out but I just soldered the chip with hot gun.I am getting this values on bios chip (Winbond 25R2S6JVEN)
              Pin 1 - 1.3V
              Pin 2 - 1.9V
              Pin 3 - 1.9V
              Pni 4 - 0V
              Pin 5 1.3V
              Pin 6 - 1.9V
              Pni 7 - 0V
              Pin 8 - 0V

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                #67
                Re: help me dell 7320-7420 PASS

                As far as I know pin number 8 must have 3.3 volts.


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                  #68
                  Re: help me dell 7320-7420 PASS

                  I found out the voltage is ok when chip is de-soldered. Once soldered back the voltage drops down as mentioned. Any idea why this behavior?

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                    #69
                    Re: help me dell 7320-7420 PASS

                    Post your problem here : https://www.badcaps.net/forum/forumdisplay.php?f=23


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                      #70
                      Re: help me dell 7320-7420 PASS

                      Originally posted by Vesko356 View Post
                      Try & leave feedback:
                      Good day, can you assist with the BIOS password for suffix 8FC8

                      Dell Latitude 7420 Board number GDC31 LA-K371P

                      BIOS BIN Below
                      Last edited by SMDFlea; 04-10-2023, 10:54 AM.

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                        #71
                        Re: help me dell 7320-7420 PASS

                        Originally posted by justice171 View Post
                        Good day, can you assist with the BIOS password for suffix 8FC8

                        Dell Latitude 7420 Board number GDC31 LA-K371P

                        BIOS BIN Below
                        Unlocked
                        Last edited by SMDFlea; 04-10-2023, 10:54 AM.


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                          #72
                          Re: help me dell 7320-7420 PASS

                          Originally posted by hoaca388 View Post
                          Unlocked
                          Wow, it worked now I can change settings on the BIOS dude you are a genius I wish I knew how to do it so that I can help others on the badcaps forum.

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                            #73
                            Re: Dell Latitude 7400 Bios Password

                            Hello,
                            can you help me? I do not know exactly which chip to read and where to find it.
                            I read this one out but the file is only 1MB. Can this be correct?

                            I have a Latitude 7420 2-in-1 (Not the one in the photo. I got the picture from the internet. But mine looks exactly the same.)
                            Last edited by SMDFlea; 04-10-2023, 10:54 AM.

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                              #74
                              Re: Dell Latitude 7400 Bios Password

                              It is a winbond 25Q80DVSIG

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                                #75
                                Re: Dell Latitude 7400 Bios Password

                                Originally posted by Kaiser87 View Post
                                It is a winbond 25Q80DVSIG
                                Name of chips ?
                                Last edited by SMDFlea; 04-10-2023, 10:54 AM.


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                                Become a Badcaps supporter
                                >>>>> click on this link to donate <<<<<
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                                  #76
                                  Re: Dell Latitude 7400 Bios Password

                                  Originally posted by hoaca388 View Post
                                  Name of chips ?
                                  upper one: winbond 25R256JVEN
                                  lowwer one: XMCC QH128AHIG

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                                    #77
                                    Re: Dell Latitude 7400 Bios Password

                                    Originally posted by Kaiser87 View Post
                                    upper one: winbond 25R256JVEN
                                    lowwer one: XMCC QH128AHIG
                                    upper one: winbond 25R256JVEN = 32MB Data
                                    lowwer one: XMCC QH128AHIG = 16 MB data.

                                    Read Winbond chip.


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                                      #78
                                      Re: help me dell 7320-7420 PASS

                                      Hi to All friend's and expert teacher

                                      need Dell latitude 7420 #9P0R7M-8FC8 bios unlock code...

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                                        #79
                                        Re: help me dell 7320-7420 PASS

                                        Originally posted by alikhoso0786 View Post
                                        Hi to All friend's and expert teacher

                                        need Dell latitude 7420 #9P0R7M-8FC8 bios unlock code...
                                        You need to open laptop find bios chip read and post here.

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                                          #80
                                          Re: help me dell 7320-7420 PASS

                                          i have LOCKED bios dell 7420 HELP
                                          Last edited by SMDFlea; 04-10-2023, 10:54 AM.

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