GTX 970 crashes during gameplay?

[Mastrocode]

So I just built my first computer, and I installed Insurgency to play on it. it ran fine for the first five minutes, then it crashed the whole PC. No error message or anything, just restarted itself. I tried reinstalling the drivers, it lasted a bit longer but still crashed the same way.

Then I tried Unigine, five seconds in, same crash.

Here are my specs: -MSI 970a-G43
-EVGA GTX 970 Superclocked
-AMD FX-6300 @ 4.1 GHz
-Corsair H60
-Lepa MX-F1 600W PSU
-8 GB RAM

I think it may be my old PSU, but I'm not sure.

 

[Outlander_04]

If the processor is overclocked then you should suspect the motherboard . Plenty of those G43's have overheated the voltage regulators and some have caught fire

The psu should be fine even if it is a few years old

 

[Mastrocode]

If the processor is overclocked then you should suspect the motherboard . Plenty of those G43's have overheated the voltage regulators and some have caught fire

The psu should be fine even if it is a few years old

Should I try without an overclock?

 

[Outlander_04]

G43 MSI motherboard can catch fire if you OC too much .
Yes . Try at stock speed