i think that it's normal
also take him to get fixed
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Clone The Drive, Wipe Contents & Return Under Warranty For Replacement.
There was a problem with the GPU overheating and causing dry solder joints. Common fix would be to reflow that section of the board.
As for your own overheating... clean it out with a compressed air can or, even better, take it apart and thoroughly clean the fan and heatsinks. Usual caveats apply when you rummage around inside something electrical.