Operating System(Windows) on ARDUINO

Some operating systems are adapted to work on ARM processors. When you want to run Windows 95 on a ARM processor, then you can run an emulator and let Windows 95 run in the emulator. For example a Raspberry Pi with Bochs (dos emulator) and Windows 95. But that is as far as it goes.

You would have to rewrite Windows from the ground up to make it work on the Due.
Others have done that for you, it is called ReactOS. A start has been made to port ReactOS to ARM processors.

You can try to put a team together of software engineers, and maybe after a year or two you can run Windows on the Due, using ReactOS instead of Microsoft Windows.