Being a new computer doesn't mean something wasn't installed correctly. So time ago I read an article talking about a CPU which wasn't installed correctly. There was a thermal goo which went under, or over the heat sink, I forget which, which hadn't been put on correctly. It seemed whoever slathered on the goo didn't put enough and the CPU was overheating, shutting down the computer.
I don't know if this is your problem, Winfrey, but it might be something to look into.
If something gets your goat, it just proves you have a goat to get.