I have never experienced a shutdown while I am actively using the computer (typing, mousing). It only shuts down when it is idle or sleeping. The only loads are the processes were left, such as Norton, IPVanish, open browser windows, OpenOffice, whatever... The only requirement for a shutdown is nobody typing or moving the mouse. If I was to leave the computer alone and sit staring at the screen, I am fairly sure it would shutdown within 15 minutes. In fact I will try to do that in case some message is displayed before the shutdown. When I put the system in sleep mode when I know I am going to be away for a while, it seems that the shutdowns occur less frequently.
I experienced a couple of BSODs a few weeks back, but not lately - even though I get several shutdowns every day.
The machine does not reboot. But, I have disabled "Automatically restart" in "Startup and Recovery".
