Remove the case cover and if things improve then some part has become heat sensitive.
The sad thing is that some crashes are due to bugs in software. It could be a mix of game, drivers or hardware. This is why I suggest you take this back to the maker for resolution. If they can't fix it, bail out and try another machine.
Bob
The freezes usually come while i am playing games for a while. The freezes make my computer completely unresponsive and requires a hard shut down.
Specs
CPU: AMD FX 9590 8 Core AM3+
GPU: Nvidia GTX 970 ssc ACX 2.0
Mother Board: Asus crosshair formula Z amd 990 FX
Ram: 2x 8GB ddr3 2133 MHZ Amd radeon memory
I have already ran a temperature check on my computer and it gave me the temps and some other Information the you may find helpful. These Are the reading i got after it Froze.
GPU<span style="font-size: 14.4799995422363px;">:
<span style="font-size: 14.4799995422363px;">Core Clock: 1366 MHZ
<span style="font-size: 14.4799995422363px;">Memory Clock: 1502 MHZ
<span style="font-size: 14.4799995422363px;">Temperature: 68 degrees Celsius
<span style="font-size: 14.4799995422363px;">
<span style="font-size: 14.4799995422363px;">CPU:
Temperature: 39 degrees Celsius
Core 1 :34%
Core 2 :39%
Core 3 :33%
Core 4 :18%
Core 5 :26%
Core 6 :35%
Core 7 :45%
Core 8 :31%
Chowhound
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GameFAQs
GameSpot
Giant Bomb
TechRepublic