Hi there and welcome
Are you able to access the disks at all? When you say they were unusable, exactly what was occurring?
ok, it appears the drives may be encrypted and if so, that you will not undo.
But if it is just some malware that has locked the windows system, then the files themselves will still be accessible.
I advise to get this adapter
then you can connect the drive to it and the other end to the USB port on your computer and it will be seen as a flash disk.
You can then access the file system directly via the working windows you have.
You will also be able to format the disk this way as its an external format so ignores the file system.
It will format, the only reason you would not be able to format the disk is if the disk has a hardware fault. No matter the software issue, formatting from external is always possible.
No problem at all, I marked this question to never close
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