Windows is not a real time OS. Neither is Linux (except for perhaps a limited number of forks/distros). If someone is going to die if a computer stops working

Windows is not a real time OS. Neither is Linux (except for perhaps a limited number of forks/distros). If someone is going to die if a computer stops working for any reason at all, it should not be running Windows, or Linux, or macOS. It certainly shouldn't be connected to the internet or to any other network. When we treat computers as nice-to-have mixed-use machines with all the bells and whistles, you need to treat them like nice-to-haves and not need-to-haves.