Win7 and Win10 dualboot led to BCD problem?

Hello everyone, I hope someone can help me about a problem with Windows Boot Manager giving me error 0xc000000f (BCD file?).
I used a dual boot with Win10 in a SSD and Win7 in a HDD which had all my files on it as well. I was going to transfer them to the SSD with Win10 but had no time. I could dual boot without problems, until last night.
When I try to boot in my Win7 HDD, Windows Boot Manager shows up, giving me that error code. I let Windows run the Memory Fix tool, nothing happened.
I stick the USB for Win7 system recovery tool, but it won't see the OS (and in the file browser it says the HDD is nearly empty). In Windows10, disk manager says the same thing about the HDD (although says it's healthy) and won't let me access it through explorer.
I lost all my files or is Win10/Win7 Installer unable to see them due to an error?
I've read it was a conflict with Fast Startup of Win10 messing with BCD file. Switched it off, nothing changed. I've tried something with CSM and secure boot in my BIOS too, but nothing happened. Win7 System Recovery Tool can't see the OS, neither "bootrec /scanos" and other functions in cmd inside the Tool. Did Memory Fix tool in Windows Boot Manager wiped my HDD thinking it was corrupted..?
Any suggestions and help are appreciated. Thanks in advance.

Hello, thank you. This screenshot has enough details? Reply if it isn't enough.
https://i.postimg.cc/13ND55Ns/unknown-64-2.png
The drive in question is G: (weirdly, in Win7 it was C:, but it's inverted in Win10).

You need to provide an image of the ENTIRE Disk Management window.
The image that you provided has part of the details missing.

Sorry, I didn't notice it.
Untitled.png (1920×1040) (postimg.cc)