Another possibility is the fan may have gone out or be bad in the power supply. I did have one machine that had a bad stick of memory and would overheat. It irritated me it was brand new and it took me a while to figure it out. But you are right it did give a system beep before it would shutdown and my computer would slow down, that is why I ask earlier if the computer was slowing down. But I bid not get a BSD and it was on a MSI motherboard A8V deluxe I believe but don't know for sure.

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A little common sense goes a long way

Later Grandpa