Starting Windows without explorer.exe
Solution 1:
Explorer.exe provides basic Windows and desktop functionality. If you kill it while running, it is restarted a few times, and eventually Windows contuinues operating without it - with nothing on the desktop, and no taskbar. If that's what you want, then make a script to kill Explorer a few times, e.g.,
taskkill /IM explorerer.exe /F
timeout 5
taskkill /IM explorerer.exe /F
timeout 5
taskkill /IM explorerer.exe /F
timeout 5
taskkill /IM explorerer.exe /F
timeout 5
Run the script at startup; it might need Administrator privilege. Not elegant, but usable.