Earlier quoted context omitted.
I didn't say it would be impossible in some abstract sense. Goodness knows even a single execution unit of a modern GPU is more powerful than my first IBM computer, if you just hook it to the right things. I asked how many days you'd be willing for your computer to boot, by which I mean something like your current workstation. Huge, huge swathes of your normal boot process would be trying to run on a single GPU execu…
Last year I got a video of my 75MHz pentium booting windows faster than a web app could load on my macbook pro (1tb ssd, 16GB ram, i7). General performance in 2019 is already horrible. Rethinking everything from the ground up would be quite pleasant imho.
Which Windows?