I have recently built a Pc, it being my first build, I wanted to test it by running a game, that game being rainbow six siege. The game seemed to run fine, until the situations game mode had finished loading and instantly crashed and rebooted. However this is specific to certain games, other games run without instantly crashing but usually crash later on, I can run simple operations fine otherwise - in other terms i have not yet crashed without playing a game. I have gone through quite a few forums, checking cpu and gpu temperature, installing the right drivers and most generic answers. The hypothesis I have lingering over me is that, the power supply is simply not too powerful enough. Yet I am hardly an expert and want to be sure on something, before forking out a fortune and buying blindly.
The specs i have are as listed:
Motherboard: GA-990X-Gaming SLI
CPU: AMD FX-8350 CPU with Wraith Cooler, AM3+, 125W, 4.0GHz, 16MB
Cache, 32nm, Black Edition