Why do my power supplies (x3) last about 1 year then start rebooting my PC

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aj01701

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Apr 26, 2014
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So i finally found the culprit that kept rebooting my PC as soon as i would go into any game play. It was my PSU. Funny thing is as i go through my receipts for warranty i find that ive bought 1 PSU per year for the past 3 years. Each time this happens its very difficult to pin point the issue, however i usually decide on a PSU, which has been fixing my rebooting in game play issues.

System:
AMD FX9370
EVGA 970 FTW
Asus Sabertooth 990 R2 MOB
h80i
Samsung 850 evo SSD
2T western digital black HDD
8 case fans

PSUs in order:
1.Corsair HX850 - purchased 1/27/2014
(thought i might be under powering my AMD rig with this PSU as its in an i5 w/MSI GTX770 system now without issue, even when playing GPU intense games such as Crisys 3 etc)
2.Evga supernova 1300 G2 - purchased 1/29/2015 (assumed faulty one that was rebooting my PC and im warrantying)
3.Evga supernova 1300 G2 - purchased 2/29/2016 (New, just purchased)

My question is what could be causing me to run through PSUs at the rate of ~1 per year?? I have many computers in my house, this particular AMD rig is the only one eating PSUs. Although this is the highest end PC I own and requires the most power. This AMD rig is even plugged into the same surge protector that my home server plugs into.

Any input into this topic is greatly appreciated!
 
Solution
A
I checked my event logs and noticed these two:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

&

The system firmware has changed the processor's memory type range registers (MTRRs) across a sleep state transition (S5). This can result in reduced resume performance.

The first one is rather vague. The 2nd one i had not seen before today... however before i swapped out PSUs i believe the processor was being throttled as it would not go over 44xxMHz and this processor will stock clock itself to ~4800MHz.
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aj01701

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One more thing to possibly note. I span 3 monitors during game play, and normal usage. So i do work my GPU a little harder then most. It might be drawing close to its max wattage durring game play.
 
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turkey3_scratch

turkey3_scratch

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That doesn't matter. The GTX 970 while gaming is typically under 200W.
 
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aj01701

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I figured overkill would be better then under powering my system. Also my HX850's capacitors started buzzing under heavy gaming load so i assumed it was working hard to run my system.
 
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turkey3_scratch

turkey3_scratch

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Maybe that was coil whine, I don't recall hearing of capacitors making buzzing noise. But for all I know they might.
 
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aj01701

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I could be mistaking... Either way it had a buzzing/whining noise under heavy loads.

 
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turkey3_scratch

turkey3_scratch

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Or burn. Or it resets if voltage is too high, or if only a certain group of wires draws a certain amount of current. Or, if UVP is present, if voltage is too low, or if OTP is present, if temps are too high.
 
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aj01701

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Apr 26, 2014
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4,520
I checked my event logs and noticed these two:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

&

The system firmware has changed the processor's memory type range registers (MTRRs) across a sleep state transition (S5). This can result in reduced resume performance.

The first one is rather vague. The 2nd one i had not seen before today... however before i swapped out PSUs i believe the processor was being throttled as it would not go over 44xxMHz and this processor will stock clock itself to ~4800MHz.
 
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Solution
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aj01701

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Apr 26, 2014
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I have ran MEMtest 86 on each individual stick of RAM for hours on end. Each stick passed a minimum of 5 times.
RAM:
GSkill 4GB x 4, PC3-12800 (800 MHz)

I have also swapped out GPUs. Swapped my GTX970 for my GTX770. This made no difference.
 
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