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Lenovo B50-50 Bios repair

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    Lenovo B50-50 Bios repair

    Dear all,

    I have an Lenovo B50-50 unit here which doesn't post. Everything seems fine, but no post.
    I think it could be BIOS related.

    I have tried 3 different BIOS from the web, but they didn't work, maybe because they are for ideapad 100 units?
    Ideapad 100 und B50-50 share the same mainboard (NM-A681), but maybe have a different EC firmware so that B50-50 EC FW and ideapad 100 bios won't post.

    I could not find any free bios for B50-50, so I upload my dump here, hope somebody can repair it.

    Best regards,

    Constantin
    Attached Files

    #2
    Re: Lenovo B50-50 Bios repair

    try this file and report..

    Bios and ec file
    Attached Files

    Comment


      #3
      Re: Lenovo B50-50 Bios repair

      Thanks, but still no picture over HDMI...

      What else could I test? Could also be PCH or CPU failure?

      Comment


        #4
        Re: Lenovo B50-50 Bios repair

        With my bios the laptop power on?

        hdmi out image problem i think it's not bios problem. Do you install all manufacture software?

        Comment


          #5
          Re: Lenovo B50-50 Bios repair

          Sorry, my explanation was mistakable..

          Laptop powers on with ur Bios, but no screen over HDMI.
          Also over eDP I don’t get a picture or backlight, so no post at all.

          What could I measure?

          Comment


            #6
            Re: Lenovo B50-50 Bios repair

            Originally posted by Claudiomfa View Post
            try this file and report..

            Bios and ec file
            Model : b50-50
            Motherboard number : cg410/cg510 nm-a681 rev 1.0 2015-05-26
            İ/0 model : İT8586E FXA
            BİOS CHİP MODEL : 25Q64FVSıQ

            EC AND BİOS PLEASE...

            Comment


              #7
              Re: Lenovo B50-50 Bios repair

              Originally posted by denzeL View Post
              Model : b50-50
              Motherboard number : cg410/cg510 nm-a681 rev 1.0 2015-05-26
              İ/0 model : İT8586E FXA
              BİOS CHİP MODEL : 25Q64FVSıQ

              EC AND BİOS PLEASE...
              always when you make a bios request, also post the original bios, even if it is corrupted..
              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


                #8
                Re: Lenovo B50-50 Bios repair

                Originally posted by Claudiomfa View Post
                try this file and report..

                Bios and ec file
                Thank

                Comment


                  #9
                  My bios has problem, Not power,all voltage is ok,include on power button.
                  Lenovo B50-50
                  Model name: 80s2
                  SN PF0MY49M MTM80S20002MZ
                  Board : cg410/cg510 nm-a681 rev 1.0

                  Attached Files

                  Comment


                    #10
                    Originally posted by pixi75 View Post
                    My bios has problem, Not power,all voltage is ok,include on power button.
                    Lenovo B50-50
                    Model name: 80s2
                    SN PF0MY49M MTM80S20002MZ
                    Board : cg410/cg510 nm-a681 rev 1.0
                    try this one and report
                    Attached Files

                    Comment


                      #11
                      Originally posted by kalilinux25 View Post

                      try this one and report
                      Same problem.Thank you for help.

                      Comment


                        #12
                        Originally posted by pixi75 View Post

                        Same problem.Thank you for help.
                        try this please
                        Attached Files

                        Comment

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