então vms formatar e o mesmo não deixa, carrego o disco de boot só que ao dar o comando ele não inicia no disco, já tentei todos os comando possíveis e até modo de segurança e nada, sabem me dar mais uma luz do que se pode ser feito ?

⟐ Answered dezembro 01, 2024 at 19:09 GMT-7

Hi guys, I hope you're doing well. I turned on my mac and all of a sudden it shut down. He's done it a few times, but this time he didn't care anymore. I took advantage of it, disassembled, changed thermal paste and to my surprise the disassembled plate turned on. I thought it was dirt or something. I put everything together and it didn't turn on. I remembered that from time to time he didn't connect a pendrive, I imagined that it could be the hdmi card, usb and memory card. That was exactly it. I unplugged the cable and it turned on. My question is: Is the problem with the board or the cable?

⟐ Edited by author dezembro 06, 2023 at 12:46 GMT-7

Preciso da vossa ajuda para tentar perceber se existe alguma relação entre as trocas sucessivas da top case ( por problemas na touchbar) e o dano na Logic board.

2 semanas após a troca da topcase no meu MacBook Pro a Logic Board, i7, 2.2GHz, 16GB, 555X, 256GB o computador começou a aquecer e a não manter a carga da bateria.

Mandei um e-mail a advertir para o facto na loja que fez a substituição ao abrigo da garantia e pediram para levar o computador para um diagnóstico. Após o diagnóstico recebi a triste notícia de que o problema estava relacionado com a board e de que esta teria de ser substituída com o custo de 768€!!! Perguntei se o dano na board não estaria relacionado com as anteriores substituições da topcase uma vez que foi a seguir a sua substituição, disseram-me que não estavam relacionadas.

Alguém me pode esclarecer sff.

Obrigado

⟐ Answered maio 31, 2021 at 8:34 GMT-7

⟐ Answered junho 06, 2020 at 16:46 GMT-7

⟐ Answer accepted abril 14, 2020 at 13:42 GMT-7

⟐ Answered maio 14, 2019 at 16:43 GMT-7

Before replacing the old logic board, I erased the machine and attempted installing macOS on it to make sure my time machine backup worked correctly. But as I was reinstalling, the MDM for my company showed up. This brought up a some questions:

1. Is MDM tied to the logic board or will replacing it still lock me out?
2. Has MDM been enabled on my laptop the entire time I've used it and I just didn't know? I haven't heard from the company so do they just not care?
3. Will MDM be linked to my Time machine backup? If I restore from my time machine backup on the new logic board, will my old company be able to track it? Is a fresh install a better idea?
4. Is it possible to bypass MDM so I can reuse the old logic board?

I've tried booting off a flash drive to avoid connecting the the MDM servers in hopes of bypassing the need for an internet connection, but I get an error saying a critical update is needed in order for me to complete the install

I am also unable to restore my time machine backup for some reason. Any reason MDM would cause issues? I loaded the time machine backup but it keeps getting stuck at page with the Apple logo with the loading bar. All troubleshooting leads back to a fresh install which I can't get past because of MDM. Hopefully there is a workaround.

Would appreciate any insight/advice.

Thanks!

⟐ Commented agosto 14, 2026 at 18:33 GMT-7

I’m looking for some advice on a 15-inch MacBook Pro 2017 (A1707).

The MacBook suddenly stopped working and now shows absolutely no signs of life. I stripped it down and removed the logic board for inspection. I found what appears to be a burnt component(photos attached).

The marking on the damaged component appears to be:

C21 36 N7 G

Can this component be replaced on its own, or is it more likely that something else has caused it to fail?

Is it worth sending to a repair specialist / can I do it myself or is it dead.

There has been no known liquid damage, and the rest of the board looks visually clean.

I’d really like to save the laptop if it’s economically repairable, and ideally preserve the data that’s stored on the soldered SSD.

Any advice or experience would be greatly appreciated. Thanks!

⟐ Commented agosto 02, 2026 at 14:07 GMT-7

I have a black screen on a macbook pro retina late 2013.

I already tried all the software fix like resetting NVRAM and SMC.

i’m trying to find a way to be sure it’s a harware failure from the screen.

The computer works fine since it’s booting and i can link it to a tv to see the desktop, so it’s not the graphic card either.

The computer got water spilled from the ceiling on the left side of the screen and it got all the way inside through the keyboard. The water quantity was very small, still the mac gave out instantly. Now it’s rebooting fine but without the screen.

I would like to find if the screen is done for good or if the connexion to the logic board is screwed. After opening the mac nothing seems to point that the logic board or the display cables have suffered.

I have a working screen from a mid-2012 macbook pro i could install for testing but i dont know if it’s compatible. On the Ifixit shop the two screens have 50 dollard of price difference, although it has the same spec, also i dont want to mess with my working macbook.

I know i could launch the apple diagnosis but it seems i cant make it display on another screen via HDMI.

Any ideas to rules out possibilities ?

Thanks for reading.

⟐ Answer edited julho 29, 2026 at 5:34 GMT-7

So if anyone can help a new diy repair guy out it would be much appreciated!

⟐ Commented julho 29, 2026 at 2:49 GMT-7

I’m looking for a board-level diagnosis for my MacBook Pro Retina 15” Mid 2015 (A1398).

Configuration

• Intel Core i7
• 16 GB RAM
• macOS Monterey 12.7.6

History

Before repair:

• The original internal display was cracked but still displayed an image.
• The Mac worked perfectly with an external HDMI monitor.

During repair:

• A technician installed a display from a MacBook Pro 2013.
• The replacement display never worked.
• He reinstalled my original cracked display.
• Since then, the internal display has been completely black.

Current behavior

If the internal display cable is disconnected:

• Apple logo appears on the external HDMI monitor.
• Startup Manager (Option key) works.
• Internet Recovery works.
• But when booting from Macintosh HD, Recovery, EFI Boot or a bootable USB, the Apple logo appears, then the screen goes completely black.

If the internal display cable is connected:

• The internal display remains completely black.

The Mac appears to continue running:

• keyboard backlight works,
• volume keys work,
• fans operate normally,
• but there is no video output.

Already tried

• NVRAM reset
• SMC reset
• Safe Mode
• Internet Recovery
• Bootable USB installer
• OpenCore Legacy Patcher

Always the same result:
Apple logo → black screen.

Verbose mode also showed messages including:

• device is not readable
• failed to initialize volume keybag

Questions

1. Could installing a 2013 Retina display on a 2015 A1398 have damaged the LCD connector or another logic board component?
2. Which is the most likely cause?
   • LCD connector
   • LCD power/backlight circuit
   • Display cable
   • GPU
   • SSD/APFS
   • Logic board
3. What measurements or board-level tests would you perform before replacing parts?

Any advice would be greatly appreciated. Thank you.

⟐ Commented julho 23, 2026 at 13:03 GMT-7

⟐ Answered julho 21, 2026 at 18:32 GMT-7

⟐ Commented julho 19, 2026 at 12:47 GMT-7

Hello everyone,

Hope you all had a good week.

Just a quick one, do we think this is safe RE: Attached image. I asked AI but I wanted a fellow tech heads opinion. I'm also in a tight spot right now so cant exactly change it straight away.

Thank you in advance.

⟐ Answered julho 17, 2026 at 19:56 GMT-7

Original symptoms were short battery life and touchpad physical clicking not working. I bought a replacement battery and touchpad.

Battery was definitely bulging and putting pressure on the touchpad. I swapped out both and when booted back up - no mouse movement or clicking at all from the touchpad. External mouse works fine, so I went into system preferences and then Touchpad. It said "Touchpad not detected" or something along those lines and had a spinning circle indicating that it was searching for bluetooth touchpads.

So I opened it back up and swapped in the original touchpad - mouse movement but no clicking. But still, system preferences says it doesn't detect a touchpad (I was hoping to at least turn on tap to click.)

So, what am I missing? Is there some extra step to set up the touchpad with the OS? Does the lack of movement on the replacement pad mean that it's DOA?

Thanks for any help!

⟐ Answer accepted julho 11, 2026 at 16:28 GMT-7

⟐ Commented julho 07, 2026 at 2:40 GMT-7

This is how it looks

⟐ Commented julho 06, 2026 at 13:05 GMT-7

video of issue

Screen

Display cables

Or logic board issues

⟐ Commented julho 06, 2026 at 9:02 GMT-7