Can you install Windows on Raspberry Pi 5? It is possible to load an early ARM-based version of Windows 11 on Raspberry Pi 5. Windows 11 ARM however, is a release build. As is always the case, talented tech enthusiasts have found a way to do it:
https://www.pcworld.com/article/2278108/can-you-load-windows-11-on-a-raspberry-pi-5.html