No legally.
The problem you have is that Xen (on which Qubes is based) is not a virtual machine despite our use of that term, it is paravirtual or some such. That means that some aspects of the real hardware underneath are visible to the virtual machine. The most important is the CPU - your VM will always report the true CPU when asked, and that would break any attempt to run Windows in a Qube on any other hardware.
Trying to run a Win VM within Qubes on the exact hardware the OEN license was issued for comes up against a different problem. The CPU matches, but things like the make/model of network cards will now be different the disks and network interfaces are Xen specific virtual hardware that does not exist in the real world. As we do not know exactly what Windows uses to build its fingerprints, it is almost impossible to capture everything.
To do what you are trying, you would need to use an emulator rather than a hypervisor. QVM without the KVM extensions would in principle do, but then you would also have to write the code to emulate every piece of hardware in your computer. (If you ever used QVM you will have noticed that the range of virtual hardware it emulates is very restricted). Even if you got it working it would run slow.
With a non-OEM license, the solution is to phone Microsoft and explain hnestly what you are trying to do and they will usually allow you to transfer your license from the real hardware to the virtual (or if you had a three-PC license, to count the virtual machine as another license). It would still notice if you moved to another qubes machine hosted with a noticeably different CPU, as explained above.
Correction
> To do what you are trying, you would need to use an emulator rather than a hypervisor. QVM without the KVM extensions would in principle do, but then you would also have to write the code to emulate every piece of hardware in your computer. (If you ever used QVM you will have noticed that the range of virtual hardware it emulates is very restricted). Even if you got it working it would run slow.
> ...
for QVM read QEMU in this paragraph.