Originally Posted by Mak213
Could be a heat issue then. Have you checked your temps?
Yep, this why I asked my question. CPU's have a thermal protection temp. More than likely it's around 70C or so. If the CPU's temp gets to that range. The PC will just shut off like you unplugged it from the wall. This is a preventative measure.
That message is a feature of Gigabytes. I'm not sure how that relates to your Shut offs. Perhaps head to their support or forums?
But, your issue is more than likely heat related.