[Penguin]

Thermal compound, or thermal paste should be between the heatsink and the cpu. It is a transfer medium that transfers heat from the cpu to the heatsink.

The only way to check is to take it apart. But if you bought it already assembled, it should be there. The only question is that maybe when it was assembled something may have happened and yours may not be making good cantact between the cpu and the heatsink.

Just something to look at maybe as a last resort.

Someone else on this board had the same problem as you as well and this suggestion was also their problem.

I'm not saying this is the answer, but something you may want to check.

But before you do this, also make sure the heatsink fan is working too. maybe the fan is bad and that is causing the cpu to over heat.

I would check to make sure the heatsink fan is running first, and then check the thermal paste.