Dell inspiron 3542 keyoard not working

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  • musanide
    JQUB
    • May 2020
    • 86
    • zambia

    #1

    Dell inspiron 3542 keyoard not working

    i have a dell inspiron 3542, the keyboard works with all the keys when the laptop turns on, i even go into the Bios setup and do all that i want, but once the Os start to load the keyboard stops working completely.. I have tried the following diagnostics:-
    1.Installed different versions of windows os.
    2.Installed Ubuntu Os
    3.Update Keyboard drivers from the official dell website
    4.Tried different keyboards.
    5.Updated Bios firmware.
    6.Flashed a new Bios firmware and even changed the Bios Chip
    and yet the keyboard couldnt start working normally, any help or advice will be highly appreciated..
  • mon2
    Badcaps Legend
    • Dec 2019
    • 13880
    • Canada

    #2
    Re: Dell inspiron 3542 keyoard not working

    Sounds like some type of a security lock.

    Have you tested with a SAFE MODE of Windows OS boot ?

    Comment

    • musanide
      JQUB
      • May 2020
      • 86
      • zambia

      #3
      Re: Dell inspiron 3542 keyoard not working

      Originally posted by mon2
      Sounds like some type of a security lock.

      Have you tested with a SAFE MODE of Windows OS boot ?
      i have not tried safe mode, i will try it today

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #4
        Re: Dell inspiron 3542 keyoard not working

        Had a look on KBC pins and kbd connector for corrosion/liquid damage??

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13880
          • Canada

          #5
          Re: Dell inspiron 3542 keyoard not working

          Had a look on KBC pins and kbd connector for corrosion/liquid damage??
          Keyboard works fine in BIOS mode; halts when any OS starts to load. Suspecting it is some security trigger.

          Comment

          • musanide
            JQUB
            • May 2020
            • 86
            • zambia

            #6
            Re: Dell inspiron 3542 keyoard not working

            Originally posted by mon2
            Sounds like some type of a security lock.

            Have you tested with a SAFE MODE of Windows OS boot ?
            tried the safe mode with windows 10 still no response,,, and the thing is the keyboard becomes completely off when the os starts to load until it fully loads.. not even a single key works ,, and when i check from the DEVICE MANAGER it shows me the standard ps/2 keyboard.

            Comment

            • musanide
              JQUB
              • May 2020
              • 86
              • zambia

              #7
              Re: Dell inspiron 3542 keyoard not working

              Originally posted by mcplslg123
              Had a look on KBC pins and kbd connector for corrosion/liquid damage??
              there is no sign of corrosion or water damage on the KBC or on the MB, and the keyboard works in bios and without OS, but once the os starts to load,it stops

              Comment

              • SMDFlea
                Super Moderator
                • Jan 2018
                • 20438
                • UK

                #8
                Re: Dell inspiron 3542 keyoard not working

                Originally posted by musanide
                there is no sign of corrosion or water damage on the KBC or on the MB, and the keyboard works in bios and without OS, but once the os starts to load,it stops
                Did you notice when this started happening,was it after a windows update
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                • mon2
                  Badcaps Legend
                  • Dec 2019
                  • 13880
                  • Canada

                  #9
                  Re: Dell inspiron 3542 keyoard not working

                  Doubt that you have a PS/2 keyboard.

                  It should be operating using the internal KBC controller IC.

                  Attach an external usb keyboard and see if that works for you.

                  Comment

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