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    #1

    Help Macbook Pro A1286 820-2915 blank screen

    Hello friends, I need someone to help me clean ME the bios that I leave attached since the macbook pro a1286 SN: C02FDHXPDFF8V 820-2915 loads the logo and then the screen is left blank, I think it could be bios

    Greetings and thank you very much in advance
    Attached Files
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    #2
    I dont think is a Bios related issue. To me sounds more like a gfx issue. Try to boot in safe mode.
    If boots, is not bios but gfx issue

    Comment

      #3
      Forgot to attach this modded bios in case is a gfx issue, flash this bios and it will disable the faulty gfx card and use integrated intel graphics.
      Attached Files

      Comment

        #4
        Originally posted by vladimir1909 View Post
        I dont think is a Bios related issue. To me sounds more like a gfx issue. Try to boot in safe mode.
        If boots, is not bios but gfx issue
        i tried that and same problem ,
        I'll still try again thanks
        Last edited by marcelofct; 01-30-2025, 10:27 AM.

        Comment

          #5
          try to perform gmux gpu disable

          Comment

            #6
            Originally posted by vladimir1909 View Post
            Forgot to attach this modded bios in case is a gfx issue, flash this bios and it will disable the faulty gfx card and use integrated intel graphics.
            i tried bios your post and works but a wanna try a clear me region , gracias
            Last edited by marcelofct; 01-30-2025, 02:53 PM.

            Comment

              #7
              Originally posted by marcelofct View Post

              i tried bios your post and works but a wanna try a clear me region , gracias
              Glad to hear it worked.
              Abrazo brother

              Comment

                #8
                Hi,
                I need your help for A1286 Macbok Pro (820-2850-A), I have password EFI on my bios and I can't restore my MacOS,
                I triyed to read my bios but I didn't find $SVS .
                My bios is a Microchip component SST25VF032B, If someone could explain it to me that would be great.

                Thanks.
                Attached Files

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                • peste
                  #8.1
                  peste commented
                  03-25-2025, 12:57 AM
                  Editing a comment
                  post merged..next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..
                #9
                Originally posted by clicfix View Post
                Hi,
                I need your help for A1286 Macbok Pro (820-2850-A), I have password EFI on my bios and I can't restore my MacOS,
                I triyed to read my bios but I didn't find $SVS .
                My bios is a Microchip component SST25VF032B, If someone could explain it to me that would be great.

                Thanks.
                try this..Change the RAM configuration and reset PRAM three times in a row...
                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

                  #10
                  Originally posted by peste View Post

                  try this..Change the RAM configuration and reset PRAM three times in a row...
                  It works!
                  Thank you

                  Comment

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