PC Randomly Turns off While playing Games </3

[Acridd]

My Specs
Intel Core i5 4460 Quad Core LGA 1150 3.2GHz CPU Processor
Gigabyte Radeon R7 370 OC WindForce 2GB Video Card
Kingston HyperX FURY 120GB 2.5" SATA III SSD SHFS37A/120G
WD WD20EZRX 2TB Green 3.5” IntelliPower SATA3 Hard Drive
G.SKILL Sniper 8GB (2x 4GB) DDR3 1600MHz Desktop Memory F3-12800CL9D-8GBSR
CoolerMaster K350 Gaming Mid Tower Case
Corsair CX-430 430W V3 80+ Bronze Power Supply
ASUS H81 Gamer Intel LGA 1150 ATX Motherboard
Windows 8.1 OS
I also Have a CPU fan (Not stock) alongside 3 other fans

Okay So I built myself a PC (First one) I've had it for around a month and all of a sudden when I play games my PC just shuts off, completely without warning, When I play CS:GO it does it sometimes In the Menu and In the game when its loading or while playing, its random and can be up to 30 minutes before it does it but it always happens, I can't work out what it is, I don't know whether it is a PSU Issue or a heat Issue or a Motherboard fault, I don't have any other PSU's to test either.

Please Help Thank you

 

[Macko939]

Please check your temperatures and post them here (I recommend open hardware monitor - google it)

I had the same problem and it turned out to be the processor overheating.

 

[Acridd]

On Idle It runs at these temperatures: (Celsius)
CPU: 32 Degree's
GPU: 34 Degree's
I would also Like to say at the moment it is quite warm (25 Degree's +) where I live, So these are higher than average which is usually around 25-30 Degree's for my gpu and cpu
And these were Under Stress, Playing a game, from before game to Complete Shutdown
https://drive.google.com/file/d/0B2n3Cvk8TqIaTjBMcWdVMFIzQWc/view?usp=sharing
Only way I think I can show it, Hope that helps

 

[Acridd]

Turns out that my power supply was either too small or faulty, with the new one it works fine