I mean; the letter is generally X (though it can differ it wont matter for your use case) and you can write a batch file to do this flash for you. Assuming you use the correct flags to auto handle any question prompts, though you could script that also.
You phrase things oodly. You either know you are at the prompt or you dont.
Drop the bin and the script into the "Sources" folder and then flash.bat to do it.
This requires knowing a few things.
How the windows install process works.
How and when to drop to and navigate to console. (Default directory)
How to flash a GPU in an automated fashion.
You need to know these things in advance if you want to do it this way. If you have another system or another GPU this is all trivial but your in a bad way if you are trying to learn it while you only have 1 gpu a bad flash and no alternatives.
Anyway its completely normal for someone to question or misinterpret this is an almost impossible situation just remember who got here with almost no way out.
Anyway.
When you boot of the drive you are prompted with.
View attachment 349715
After pressing a button (you only have a few seconds)
You get the main install menu (this can take several seconds or minutes)
View attachment 349716
Shift + F10 here opens the shell. Which actually AUTOMATICALLY drops you to the correct drive letter and the "sources" folder.
View attachment 349718
From here if you wrote a script you can execute it. Otherwise you can trigger nvflash from this point. I would choose 32bit for compatability, it should run regardless of the windows arch chosen but since we are in a PE environment 32 is always the safe bet.
IF you arent scripting and want to flash it manually you can do that here as well. It should go without saying that all your files. nvflash, bios.bin/rom, script.bat should all be present here and in this directory. Ideally renamed for ease of use.
At this point you will likely want to run the following 2 commands.
Followed by
Its important to include the extension to minimize any problems in a PE environment, though windows has gotten a lot smarter you are likely not going to be able to tab auto complete and this will remove some varables.
However, if your vbios IS damaged you will need to hit "y" shortly after running the flash command. This can take a few seconds so you will need to wait. After pressing "y" it should auto advance. There may even be a flag to remove the "y" warning, but im lazy. Besides you could script this out I imagine if you ever wanted to go that route, though im not inclined to take the time to write it for you.
The flash itself can take a moment, a safe bet would be to go get a soda or make a coffee. It doesnt take long, but it is an eternity if you are in-front of the screen so best not to interrupt it. The system will not automatically restart. The tool will just quit. After it completes just press ctrl+alt+del to reboot the system. With any luck you will get output.
Good luck.
