@lightweight >I'd recommend installing LiGNUx on a second computer as first step without disturbing your current one if you can
You can just try a live image from a flash drive on any existing computer without disturbing anything else on the computer.

There are some distros that will save state too.

>Then do your best to use just the LiGNUx computer until you encounter a show-stopper (where what you want to do is impossible, not merely a bit inconvenient or complicated).
That does not happen unless the user runs into proprietary sabotage.

Most users really don't seem to use a computer for anything but a web browser and maybe an office suite that will open and print whatever files people send, which works far better and is simpler to do on LiGNUx.

>consider moving your main machine to LiGNUx - but first make comprehensive backups
Just a standard file copy will do (too bad certain proprietary software intended to make that impossible), as Linux+FUSE will can read almost every filesystem.

>(only slightly illegally) install Windows on it
Why would installing windows in a VM be illegal?

I have no use for functionally garbage OS's and I've deleted any windows VMs I made years ago myself.