Originally Posted by
CPRich
It spontaneously rebooted your machine in the middle of what's defined as working hours for Windows without any user notice? That's odd.
Or did you leave unsaved changes overnight?
As discussed in the attached thread, various versions of Windows have settings to avoid this, including the newest version of Home.
The idea that it’s okay for a computer to reboot itself during non-working hours is misguided at best.