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Newly built PC Sudden Reboot during Gaming

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September 28, 2013 10:45:56 PM

I built a desktop days ago. Everything works smoothly except one issue: it will sudden reboot after 30-40 mins of gaming, borderlands 1&2. Before the reboot, there is NO blue screen or freezing or frame rate drop. I looked up the Windows event log, and it records "kernel-power 41" every time the system reboots. Online posts suggest it could be overheat or overclock. But I never oc my CPU or GPU. I also monitored the temperature of GPU, it never exceeds 40 C. I ran benchmark for 10 min, eveyrthing was fine. I also completely uninstalled the graphic card driver and reinstalled the latest version, but the problem is still there. I actually have no problem on Total War Shogun2 or Metro Last Light. But I have freezing problem with BF3.

My specs:

i3-3225, 3.30 GHz, 3MB Cache, LGA 1155, 56W
Gigabyte GTX 650ti oc version
Motherboard: AsROCK z75 pro3
2x4GB corsair vengeance ddr3

Any solution appreciated :) 

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a b 4 Gaming
September 28, 2013 11:44:21 PM

could be your powersupply is giving bad power. the type of reset you're describing is very common when a cpu isn't getting good power. that can happen when you have a bad psu... or an overheating motherboard (particularly one with bad/defective vrm/mosfet system)

that your problem is coming after 30-40 minutes of gaming tells me it's partly temp related, but temp on the motherboard or temp in the psu i'm not sure. The best way to eliminate the possibility of it being temperature driven, would be to pop the side of your case off and stick a room fan in the opening blasting on high. nothing should overheat then. play your game and see if it crashes. if it doesn't then you DO have a temp issue causing your problems and need to work on case airflow a bit. if it still happens then it's probably a faulty motherboard or psu.
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September 29, 2013 12:24:50 AM

ingtar33 said:
could be your powersupply is giving bad power. the type of reset you're describing is very common when a cpu isn't getting good power. that can happen when you have a bad psu... or an overheating motherboard (particularly one with bad/defective vrm/mosfet system)

that your problem is coming after 30-40 minutes of gaming tells me it's partly temp related, but temp on the motherboard or temp in the psu i'm not sure. The best way to eliminate the possibility of it being temperature driven, would be to pop the side of your case off and stick a room fan in the opening blasting on high. nothing should overheat then. play your game and see if it crashes. if it doesn't then you DO have a temp issue causing your problems and need to work on case airflow a bit. if it still happens then it's probably a faulty motherboard or psu.


Thank you for your reply!

I did use Aida 64 to monitor and record hardware temperatures. The log data shows that right before the reboot, the CPU temperature never exceeded 57 C and GPU temperature never exceeded 45 C. If it's faulty motherboard or psu, is there a way to make sure, since this involves refund issues? Thanks again
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a b 4 Gaming
September 29, 2013 1:55:20 AM

the easiest way, if you eliminate temps... (NEVER take the onboard hardware temp monitoring as true. you wouldn't believe how many are badly calibrated or don't work at all. try what i suggested with the fan... that's the surest way to make sure your problem isn't temp related) would be to swap out the psu. first of all psus are cheaper then motherboards... and secondly lots of working psus are laying around for free or close to it. I would just borrow someone else's psu and see if the problems exist for you then. if you can't replicate the problem then it's probably the psu that's at fault. if a new/replacement psu doesn't fix your issue, then it's the motherboard (most likely)
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September 29, 2013 2:16:43 PM

ingtar33 said:
the easiest way, if you eliminate temps... (NEVER take the onboard hardware temp monitoring as true. you wouldn't believe how many are badly calibrated or don't work at all. try what i suggested with the fan... that's the surest way to make sure your problem isn't temp related) would be to swap out the psu. first of all psus are cheaper then motherboards... and secondly lots of working psus are laying around for free or close to it. I would just borrow someone else's psu and see if the problems exist for you then. if you can't replicate the problem then it's probably the psu that's at fault. if a new/replacement psu doesn't fix your issue, then it's the motherboard (most likely)


Thank you again. It turns out that the Graphics Card is the source of overheating, EVEN WITHOUT overclocking. I installed my graphics card to my friend's computer and ran the full load stress test, it was stable at first 10 mins, at 63C. But 10 mins later, the graphics card stopped responding and froze the system. I guess the card is defective.
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a b 4 Gaming
September 29, 2013 5:21:44 PM

GTkl2011 said:
Thank you again. It turns out that the Graphics Card is the source of overheating, EVEN WITHOUT overclocking. I installed my graphics card to my friend's computer and ran the full load stress test, it was stable at first 10 mins, at 63C. But 10 mins later, the graphics card stopped responding and froze the system. I guess the card is defective.


glad to hear you figured it out. sucks for your gpu to be the source of the problem like that but i am sure it's still under warranty.
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