Samsung shutdown after 30minutes

Hi,

Here are some troubleshooting steps that may help in solving the issue.
- I would start cleaning the inside of your laptop, make sure there's no dust of the fans and apply new thermal paste on both the GPU and CPU.
- If these doesn't work do test your AC adapter if it's supplying enough voltage or try a different AC adapter that has the same voltage.
- Next to try to remove the battery of your laptop and boot it up with just its AC adapter and see if it will still shutdown automatically.
- If the laptop will still shutdown without its battery and using a different AC adapter that means it has something to do inside the motherboard.