For example, doing a system upgrade and not being able to boot afterwards. Never happened to me on a Mac in over 20 years of having one. Windows will update at

For example, doing a system upgrade and not being able to boot afterwards. Never happened to me on a Mac in over 20 years of having one. Windows will update at terrible times while I'm in the middle of something but will do it successfully at least. Ubuntu let me down with a totally standard configuration. Issues with things like dual monitors on Linux laptops and other peripherals.