Computer keeps shutting off

HPTL7 · 25 Feb 2017 at 14:29

Hello
I was playing battlefield 4 for the first time on this pc. It is a new pc and this is the first game I played on it. It worked fine for the first few minutes and then without warning, the pc just switched off.
I thought there is something wrong with the gpu so i ran a unique valley engine test on extreme hd. It ran 14/18 scenes and then again switched off. Is it the gpu's fault or maybe the psu?
Edit: I ran the unique benchmark three times and it always crashed on scene 15.
Also, earlier today, the pc's screen had switched of but the computer was still running. I looked at the back and saw that all the ports of the back were not working. The mouse and keyboard led's were off.
I had to shut the pc of via the psu button and then restart it.

UserBenchmarks: Game 69%, Desk 55%, Work 42%
CPU: AMD FX-8350 - 64.1%
GPU: AMD R9 290 - 80.5%
SSD: SanDisk SSD Plus 120GB - 70.1%
SSD: SanDisk Ultra II 120GB - 51.3%
RAM: Samsung M378B5173DB0- 2x4GB - 31.5%
MBD: Gigabyte GA-970A-UD3P

Specs
8350 @ stock speeds
gigabyte 970a-ud3p
8gb ddr3
gigabyte r9 290 4gb
corsair 500w

HPTL7 · 25 Feb 2017 at 15:54

jbh110tdi said:
while it was running the benchmark did you notice what temp the gpu was at?
also which corsair PSU is installed is it the CX500w?

well...
I did the benchmark again until around scene 12, then alt tab'd out to see the temp, it was 95C... WTF ****** **** *****
WHY?

HPTL7 · 25 Feb 2017 at 16:01

howiepoohs said:
Probably the PSU. It's cutting it fine with 500w

??
The PSU causes the gpu to go at a crazy high temp?

HPTL7 · 25 Feb 2017 at 19:43

yeah it is a cx500.

I ran unique valley again and checked the fans. All 3 of them were not moving. It was working earlier. I restarted the computer and still nothing. Doesnt move from restart.

HPTL7 · 26 Feb 2017 at 00:58

jbh110tdi said:
do you have any software installed that can control the fans? ie msi afterburner?

I tried that. Put it on max, doesn't move at all.
Yesterday it was working perfectly, the fan could go at 4500rpm at max, I was playing around with it but didn't save any settings. Everything is at default

HPTL7 · 26 Feb 2017 at 13:09

any ideas? Do i just send it back?

HPTL7 · 26 Feb 2017 at 15:47

moves fine manually.
What I dont understand is why were the fans working perfectly the day before and not anymore?

HPTL7 · 26 Feb 2017 at 17:57

it is a
gigabyte r9 290 4gb
http://www.gigabyte.com/Graphics-Card/GV-R929OC-4GD#ov

HPTL7 · 26 Feb 2017 at 18:08

I bought each part from different places. all of them new except cpu. Cost me a little less than £400.