PC re-booting during gaming

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SashimiSensei

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Sep 21, 2013
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10,510
Hi all,

First of all, here is my build spec:

Fractal Design Node 304
Core i5 6600K
MSI Z170i gaming pro ac
Corsair Red Vengeance LPX 3000 16GB
Gigabyte GTX970 Mini ITX - OC 4GB
Seasonic 520w M12ii-520 (replaced with a Seasonic 620w M12ii-620)
CoolerMaster Hyper212x
Samsung 850EVO 250GB SSD


I recently completed my first PC build and I am having a problem with the finished unit. The computer runs absolutely fine and can stay on for hours and hours without issue. But as soon as I start to play games, the power simply shuts off and the PC reboots by itself. I've done all manner of trouble shooting and testing. During things like Prime95 and 3DMark, it runs fine. During the windows memory diagnostic tool, it produced no errors.

Temperatures remain well within reason at between 35-80C at idle/load for CPU and GPU.

I thought that probably the problem was low power, so I replaced the 520W PSU with a 620W unit. (Gigabyte's website rates the PSU requirement as 400W and various online PSU calculators gave anywhere from 250-300W).

Anyway, after replacing the PSU with the 620W unit, the power-down then re-booting has persisted. Could it be that I need an even more powerful PSU? What would do it? 750? 850?

Or do you think there is something else at fault?

Any advice or information would be very much appreciated.

Many thanks,

Sashimi

 
Solution
F
no its not the psu, especially after 2 psu with the same result. 620 is fine and Seasonic make good PSUs.

Youre overclcocking right? first it put the settings back to stock and try again. if still prob then the GPU may be the cause, although rebooting is weird.
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fredfinks

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Oct 21, 2015
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no its not the psu, especially after 2 psu with the same result. 620 is fine and Seasonic make good PSUs.

Youre overclcocking right? first it put the settings back to stock and try again. if still prob then the GPU may be the cause, although rebooting is weird.
 
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Solution
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SashimiSensei

Honorable
Sep 21, 2013
8
0
10,510
Hi fred,

No, I'm not overclocking at the moment, since the PC has never been stable enough to try. Is there a way to check if it's the GPU causing the problem? What could cause the PC to re-booth though?
 
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fredfinks

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Oct 21, 2015
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When you say its never been stable enough is that due to this single rebooting issue or other stuff occurring?
If its only that id say its the GPU. Unfortunately theres really no way of testing without having other pcs and/or GPUs to test. id take it back to the store for replacement/repair. They'll test it.
Just basically explain that it shuts down during gaming and that youve tested another seasonic PSU to rule out the PSU as the cause. Tell them you do not overclock at all.
 
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SashimiSensei

Honorable
Sep 21, 2013
8
0
10,510
OK, thanks fred. This is the only issue with the PC, but I haven't wanted to OC while it's going on. I guess I'll take it back to the store where I bought the parts and see if they can take a look at it.

Cheers,

Sashimi
 
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fredfinks

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Oct 21, 2015
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yes, or RAM. but you say temps are fine so assuming they are correct, im going to go with ram. needs testing though. check out mem test.

Hold on, youre not overclocking and its at 80c on load? thats darn high for stock. While i have a better air cooler, i dont see above 75 with an overclock on prime. maybe something up with your connection of heatsink. id take it to the store. see if they can help you out.

youre gonna have to eliminate multiple possibilities.
 
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