MBP 1,1-10,2 HELP - MacBook Pro 2012 (820-3330 B) - Fresh Install

[Thabto]

Hi.
I inherited myself a Mid 2012 MacBook Pro (A1286) which has a 820-3330 B logic board. It turns on and tries to load the MacOs. The screen just goes blank moments after displaying the Apple logo. The keyboard backlight remains on for some time. I do not know what I am dealing with here, GPU? Corrupt MacOs? Here is what I have tried:
* Clearing NVRAM and SMC
* I have also created a usb boot installer in Windows using Transmac and a Catalina.dmg I found on Mediafire. I have tried without success booting from the Catalina usb bootable (i.e. holding down the "Options" key) but it does not show. I have tried with a Windows 10 usb bootable drive and it shows on the boot options without any issues. So the USB ports are fine. I just can't boot from my catalina usb bootable disk.
I repeated the process with a Mojave image I downloaded, but still I can't boot from it.
My question is am I creating the USB bootables the wrong way? Got no choice but use Trancmac from a windows environment as I do not have another Mac to use for this. Is there something I am missing here. Please help. Let me know

 

[theMarble]

TransMac will be the issue, it is notorious for very rarely being able to create working macOS installers.

Do you not have access to Internet Recovery?

 

[Thabto]

Unfortunately I do not have access to internet recovery (wifi). Can I use ethernet instead?

TransMac will be the issue, it is notorious for very rarely being able to create working macOS installers.

Do you not have access to Internet Recovery?

 

[theMarble]

Unfortunately I do not have access to internet recovery (wifi). Can I use ethernet instead?

Yes, as all Internet Recovery needs is a working internet connection.

 

[Thabto]

Let me try that I will report back.

Yes, as all Internet Recovery needs is a working internet connection.

 

[Thabto]

TransMac will be the issue, it is notorious for very rarely being able to create working macOS installers.

Do you not have access to Internet Recovery?

Hi. So I managed to access internet recovery but it only prompted to install OS X 10.8.5 How do I get the latest supported OS for my MacBook? Which I happen to think is Catalina. Let me know

 

[theMarble]

How do I get the latest supported OS for my MacBook? Which I happen to think is Catalina.

The latest version of macOS that is natively supported on your MBP is Catalina, however if you don't have an SSD I would strongly advise against installing it or Mojave. This is due to them both using APFS (the new Apple Filesystem), which has zero optimisation for running on mechanical/spinning drives, making performance excruciatingly slow. I would instead suggest installing High Sierra instead, as that was the last OS that didn't use APFS.

To do this from Mountain Lion, you will need to download the High Sierra installer from here. If the Mac App Store link doesn't work, you will need to try it from a newer browser that works on 10.8, like Chromium Legacy. From there, you should be able to install High Sierra.

If you can't install High Sierra using Mountain Lion, then you will need to use another Mac to download and create a bootable HS USB drive. Unfortunately, this simply cannot be done from a Windows/Linux machine.