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Thinkpad E14 black screen

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    #1

    Thinkpad E14 black screen

    Hello guys,
    I got laptop E14 as non-working.

    type: 20RA001EMC
    motherboard: NM-C421


    Laptop reacts to the power button, but no picture, no vcore. I dumped bios, cleared ME but no impact. I pushed bios from slighlty different E15 laptop cleared here on forum. Laptop went alive, vcore on, picture showed:
    0271: check date and time
    0183: bad CRC of security settings in Efi
    bios is under password.

    Then I rutned off laptop, turn on again and it returned to 1st state - no picture, no vcore. Then I experimented with various BIOSes (E14, E15, cleared ME,..) without any particular result - black screen, no vcore. After multiple flashes Iam sometimes able to reach error screen with 0271 and 0183 but its aprox 1 out of 5 flashes..
    I uploaded both bioses - original dump and working for a while.

    Iam little bit lost, Iam not able to 100% replicate even the error screen. Do you have any idea, what would be the suggestions? EC chip itself?

    thank you for any hint
    Attached Files
    Tags: None
    #2
    Re: Thinkpad E14 black screen

    Originally posted by garfild View Post
    Hello guys,
    I got laptop E14 as non-working.

    thank you for any hint
    try this bios, see if the error messages are gone
    Attached Files
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

      #3
      Re: Thinkpad E14 black screen

      Originally posted by SMDFlea View Post
      try this bios, see if the error messages are gone
      Hello!,
      yes still shows error during the posting unfortunately. Do you know if there is any chance to remove password besides read out directly EC? Autoscript does not work...

      Comment

        #4
        Re: Thinkpad E14 black screen

        Originally posted by garfild View Post
        Hello!,
        yes still shows error during the posting unfortunately. Do you know if there is any chance to remove password besides read out directly EC? Autoscript does not work...
        This thread might help - https://www.badcaps.net/forum/showthread.php?t=104478 .Ec or patching,i don`t know which one will work. Some of the errors can be solved with the lenovo maintenance disk or other DMI tools
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

          #5
          Re: Thinkpad E14 black screen

          Originally posted by SMDFlea View Post
          This thread might help - https://www.badcaps.net/forum/showthread.php?t=104478 .Ec or patching,i don`t know which one will work. Some of the errors can be solved with the lenovo maintenance disk or other DMI tools
          yes, this I went trough, unfortunately DXE driver (autopatcher) not working for this and I do not ahve programming device for EC. Probably need to wait until "the successor" will arrive.

          Comment

            #6
            Re: Thinkpad E14 black screen

            Behold! The Successor!

            IT8227E dump attached, can somebody remove the password pls?
            Attached Files

            Comment

              #7
              Re: Thinkpad E14 black screen

              fixed! thank you all for your helps and tutorials on forum

              Comment

                #8
                Re: Thinkpad E14 black screen

                Originally posted by garfild View Post
                fixed! thank you all for your helps and tutorials on forum
                Thanks for the follow up,i`m glad you fixed it
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                  #9
                  Re: Thinkpad E14 black screen

                  Bios Original NM-C421
                  Attached Files

                  Comment

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