Windows 10 virtual machine boot BCD error

I have a windows 10 hyper-v and I an trying to start a windows 10 virutal machine... I got an error \boot\BCD error code 0xc000000f

Any suggestions on how to repair it? How can I use USB with windows instalation to repair it?

Is it possible to run repair tools such as bootrec from host machine.

I can still access all files if I mount vhdx on host machine.

Thank you

UPDATE:

After running a repair tool with windows10 installation media, the user folder is gone and I cannot even enter the cmd because the administrator privilages are needed but there is no admin account. Interesting stuff