No sleep option in kvm win10 VM

I just finished making my win10 VM in virt-manger but in windows, I do not have a sleep option.

P.S I am passing through an Nvidia GPU as my display output all drivers for GPU were installed.

Any help appreciated.

You can pause the VM
or switch it off saving the current execution state
via the virt-manager GUI (or command line, however you manage your VM).

The effect is the same as using the suspend or sleep feature of the OS
which is Windows in your case - I don’t know why this feature of Windows doesn’t work,
you’d have to ask in Windows specific places for that I guess.