Restore lost VM

I have been tasked with restoring a VM that was lost in a datastore overwrite incident. Documentation on the previous VM's configuration is lacking so I am in a trial and error state.   As of now I have built a new linux vm using hyper-v.  From here I have managed to get the restore of files and folders to begin, however the job will fail eventually due to authentication failures.

Advise needed: 

Is there a way to make an iso that builds the vm and restores the full backup so when it is all completed the vm is exactly as it was before it was lost?

Or is it too late now that the original VM is gone?

What is the best way to go about restoring the backup so that the new VM is functional at the end?

Any advise would be appreciated.

Thanks!