It honestly sound like either the pump isn't running,very bad thermal paste job,or a very very bad chip.My guess is on the pump not pushing any coolant.I also suggest what rubix suggested.See if the pumps even running .You will hear it with no fans on,even with the fans at quiet settings you will be able to hear it if you put your ear by the case. If it is running rotate the rad and pump itself in all directions multiple times.