Log in via rescue on linux 64bit.

Download and extract portable qemu-kvm. /tmp folder is enough.

You must download UEFI bios and support larger than 2TB partitions.

Download the windows ISO.

Run qemu-kvm.

Or run for UEFI.

Finally, vnc is opened

 

Sources
https://www.danpros.com/2017/09/install-windows-on-any-server-using-rescue-system-and-qemu-kvm
https://cdld.nl/blog/install-windows-server-2019-on-a-dedicated-server-hetzner