Computer crash when playing intensive games

[mattrumsby]

■ I like to think that my computer is good enough to run the latest games at good frames, which it can but in some cases my computer just crashes. I have CPUID HWMonitor open and it says my CPU only goes to a maximum of 50 degrees while my GPU doesn't go above 80 degrees (on PUBG) which is fine, but it doesn't tell me why it crashes.

My specs are:
GPU - Sapphire Radeon R9 380x
CPU - AMD FX 8350 (run at 4GHz)
Mobo - MSI 970 Gaming
PSU - (a random one which has worked for 2 years)
CPU Cooler - Hyper 212 Evo
Case - NZXT H440

The case has three 90mm front intake fans and one 120mm outtake with a 90mm fan on the heat sink pushing air to the back of the case. Can someone please indicate any solution weather it be replace the Power Supply or add fans to the top of the case, I am open to any suggestions,

 

[Barty1884]

Can you provide more info on the "random" PSU you have?

Those are some pretty power hungry components (125W CPU, 200W GPU) etc..... if the PSU is poor quality, it may be the culprit, regardless of whether it "worked" for 2 years.

From what you're describing, I would be inclined to look at (in order):
1. Temperatures
2. Drivers
3. Power supply.

Sounds like you've addressed the temps, they sound fine..... the GPU is a little on the warm side, but a 380X should still be perfectly 'safe' at 80'C.
There are other areas, motherboard, VRMs etc..... but I believe the 970 Gaming should be capable of handling the 125W 8350 sufficiently.

You could look to fully remove your GPU drivers and reinstall, just to rule them out.
I'd suggest using DDU in Safemode to accomplish this.
http://www.guru3d.com/files-details/display-driver-uninstaller-download.html

Beyond that, the next obviously potential cause would be the PSU..... given you've provided no info on it, I'm going to assume it's fairly low in quality.... and a likely culprit.

 

[mattrumsby]

Can you recommend me any cheap but perfectly functional PSUs that won't cause any issues?

 

[Barty1884]

Where are you located? And what would you define as "cheap"?

Anything truly "cheap" isn't going to be worth buying, but a quality PSU doesn't have to break the bank.
For example, in the US, $30 (after rebate) could get you this
https://pcpartpicker.com/product/fZyFf7/seasonic-power-supply-s12ii520bronze

It's a bit of a dated platform at this point, but still totally capable, and good quality.

$56 (again, after rebate) nets you a much more modern, quality option.
https://pcpartpicker.com/product/DPCwrH/seasonic-power-supply-ssr550rm