You can try this:
Create HVM, set uefi feature for it:
qvm-features <vm-name> uefi 1
Add ovmf.bin in your dom0:
Unmount the EFI System partition from Qubes OS:
sudo umount /boot/efi
Presistently attach the EFI System and Windows partitions as block devices to your qube:
qvm-block a --persistent qubename dom0:nvme0n1p1
qvm-block a --persistent qubename dom0:nvme0n1p2
Boot from qube and if you end up in startup.nsh shell then enter exit to enter UEFI menu and in Boot Manger select WIndows boot menu entry.
1 Like