1 min shutdown

I have a mildly used 13 month old Samsung laptop that is having shutdown issues. It starts up normal and in about one minute, the screen pixilates, freezes and then shuts down. You the have to wait about 10-15 min before it will start. The fan has zero dust build-up and spins ok at startup. Can a heat sensor be bad on one of the parts? Any suggestions would be appreciated. Thank You
Thank You, I'll try that.
Put new thermal compound on cpu heatsink. It seems to run longer, but the fan seems intermittent from light to zero. I also noticed that the chip that seems to be an AMD video chip is very discolored like it was hot. That chip is not removable from MB since it has red glue at the for corners. May just need to install new MB.