Windows support isn't an insurmountable obstacle. As long as the ACPI implementation works, Windows is (generally) quite happy to run on it Google's Chromebook

Windows support isn't an insurmountable obstacle. As long as the ACPI implementation works, Windows is (generally) quite happy to run on it Google's Chromebooks all run vanilla Coreboot, and if modded with SeaBIOS/Tiano, will happily boot and run Windows (though drivers can be troublesome)