rImITywR , 7 months ago

Do you have an earlier snapshot that you can roll back to? If not then this is a learning experience about how you should take a snapshot before doing any configuration changes/updates. And also maybe some automatic ones on a schedule (daily/weekly).

As far as recovering files, you could try the Windows recovery environment (or whatever they call it). Take a snapshot first, in case it makes things worse.

You could also try mounting the virtual disk to your host system. www.baeldung.com/linux/mount-qcow2-image

Or try booting the VM with a live boot environment of your favorite distro, similar to how you would do recovery from a dead physical machine.