Computer crushing when heavy load

[juanfe1a]

Hi.

I have been having trouble with my computer.

My computer Halts/Crashes when doing something that's heavy load, for example: Rendering a video in premiere pro,Playing Battlefield 4 and 3,etc. It doesn't even say a error, it just shuts off. 

Please tell me what could be wrong. I was thinking it was my power supply because it's a bad make and company but I don't want to buy something if it doesn't fix it.

Computer specs:

MB: MSI 760GM-P23Fx

CPU: AMD FX-6300

RAM: 4G markvision(really basic)

GPU: R7 260x
HDD: Sergate 1TB dont know the series 

PSU: Corsair cx430

Thanks.

(I saw that some one had the same problem than me so i just took his text and modify the specs according to mine...)

there is a pic of the system with shity resolution

[Jobbe03]

What are your temps like under load? 

[phillrulz]

Check event log

[xox]

Since when was it like this?

[WinNut]

Are you seriously using THAT BAD OF A COOLER for an FX? Get a Hyper 212 Evo, I suspect that temperatures are to blame.

[DgoTech]

I would say fairly confidently that your PSU is underpowered, Corsair is a good company but your GPU calls for at least 450w and also the FX series chips are power hungry so I would consider upgrading your wattage to 500-550w