Computer restarting when playing video games... who is dead ? GPU ? PSU ? other ?

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John Richard

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Sep 15, 2013
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10,510
Hello

My 3 years old computer started to reboot when playing game a week ago. But since yesterday some game are now crashing immediately ( like left4dead2) and some other randomly (like League of legends) . So i run tons of tests i found thanks to this forum.

Spec
CPU: Q6600
GPU: Geforce 9800 GTX+ (latest drivers)
MB: Asus P5Q3
PSU: LC6550
RAm: 2*2gb kingston (not totally sure about the brand)
OS: Win 7

First Temperature check: ok
Then i tried to overload CPU for a long time with stuff like Prime 95, and all went ok.
Then i installed OCCT and made a power supply test who worked fine ! (i was surprised because i was expecting SPU failure)
But then i tried GPU:3D test and maybe half a second after the "donut" appears my computer reboot like in game.

From there i don't know if a chipset on my GPU is dead (i can see the same "donut" from the power suply test) ? or if it just a power shortage (the 3D stuff taking a lot of power?..)

I have also checked the current voltage of my PSU who sounds low:
npUI6Bo.png


Thanks for your advice.
 
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John Richard

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Sep 15, 2013
19
0
10,510


I hope i gave enough spec.
Concerning OCCT i can run the four test i see (CPU:OCCT; CPU:linpack, GPU:3D and Power Supply) but only GPU:3D made me crash and almost instantly.

I can lower the settings of this test or use DX9 instead of DX11 it will always shut down my computer almost instantly.
 
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John Richard

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Sep 15, 2013
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10,510


I've cleaned as best as i could. So it mostly dust free. But since the crashes occurs even at low temperature (like 40° at startup)
i think the issue is somewhere else. (all fans are working properly)

However this summer i had over heating issues because of dust (the computer shut down and was hot, so i cleaned it right away and everything was fine after) so maybe my GPU has been hurt. But it was like 2 or 3 months ago.

I wish i could find a way to be sure it's the GPU. (especially since it's one of the most costly part of the computer :( )

 
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John Richard

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Sep 15, 2013
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For info i managed to run a full 3Dmark test without a crash but the GPU 3D test of OCCT is still crashing ... so I'm a bit lost.

I tried to unplugged 1HD and 1 ram stick to lower the PSU load. And it's still crashing instantly.
So i guess i will have to resign to buy a new GPU. I'll prolly do so tomorrow, so any advice or suggestion of testing are still welcome until then.

Edit: The power supply test of OCCT is now crashing which wasn't 12h ago. So if things going worse that fast i'll just wait and see who is completely failing me at some point.

 
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John Richard

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Sep 15, 2013
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10,510


Tks a lot for this deep look over my PSU. I'll try to switch the two connectors of the GPU, if i see a different behavior it would prolly means power issues.

Edit: It didn't change anything.
However i took time to see review of my PSU and if was awful, so i think i'll buy a good one and will prolly keep it when i build a new computer.
 
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John Richard

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Sep 15, 2013
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10,510


Couldn't it be the activation of a defective chipset of my GPU ? It could lead to the same conclusion isn t it ?
Anyway i'll try a new good PSU. i'll keep you and the forum posted.
 
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