1 Month+ Old Gaming PC, shut downs inadvertently. Help please

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andykho

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Dec 16, 2014
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Morning guys! (It is morning here :D).

Sorry again for troubling you guys. *bow 45 degree

I have never had problems with my new build (my first too), but these few days suddenly my dear PC decided to go crap on me for reasons that i have failed to comprehend rather than my very limited knowledge on how to assemble a PC perfectly. But if it was the latter, i am very confused as to why it was running perfectly smooth the first month.

The problem :
My PC can suddenly shut down with no warning whatsoever (and not the good Windows is shutting down thingies). It just suddenly powers off, gives a flicker once then it can not be turn on unless i unplugged the PSU switch then plug it in again, then the PC will want to start again. The strange thing is that it happens mostly on the night. Is there by any change that it is caused by wattage shortage? But i had been using this PC at the same time prior to this problem and nothing had happened.. There has never been light flickers in my PC nor my house's lights.

Here is my full spec :
CPU : i5 4690K
GPU : GTX 970 G1 Gaming
RAM : 16 GB (2x8 GB) PRO Red Corsair
CPU Cooler : H105 Corsair
Case : Fractal Design Arc Mini
Fans : - Top : 3x120mm (pulls out air), connected to header fan control ( i always put to 12V)
- Back : 1x120mm (pulls out air), connected to MB (set to full power too)
- Front : H105 (push pull configuration to pull in cool air), connected to PSU
- Back : 1x120mm (pulls in air), connected to MB, set to normal speed
(the reason why that i used so many fans is becasue that my working room is kind of small and closed off from my bed room, so in the hope of preventing over heating.. i kinda put more fans to regulate more airflows)
PSU : Corsair AX 760
SSD : Corsar LX 512GB

And also, my PC has always been giving some electric shocks whenever i touched the case with bara hands and feet. But if i were to wear rubber sandals, the shock will be gone. I suspect bad grounding from which the developer built this house. I live in a country where everything should be questionable at best on its integrity.

NB : it shut downs even when i am just watching youtube or doing some documents for my job. It just dislikes me that way.

Thank you guys in advance for taking time to read this heartfelt novel..

 
Solution
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A power controller in a computer has many inputs to decide when to power on and power off. Surge protector is not in any of those inputs.

Surge protector does absolutely nothing until voltage exceeds its let-through number. Read it on the box. Do you experience well over 330 volts on AC mains? If not, then the protector does nothing. If yes, then you have hardware damage; computer no longer powers on.

Move on to a discussion of what controls power cycling inside every computer.

One feature in a power controller is the safety lockout. This is...
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andykho

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Dec 16, 2014
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I am. Do you think this problem can be caused by the surge protector? If it's a possibility, i just need to buy a new one, since the one that i am using right now is kinda old..
 
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westom

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A power controller in a computer has many inputs to decide when to power on and power off. Surge protector is not in any of those inputs.

Surge protector does absolutely nothing until voltage exceeds its let-through number. Read it on the box. Do you experience well over 330 volts on AC mains? If not, then the protector does nothing. If yes, then you have hardware damage; computer no longer powers on.

Move on to a discussion of what controls power cycling inside every computer.

One feature in a power controller is the safety lockout. This is triggered by events such a intermittent power interruptions maybe caused by arcing in loose wires in the wall. Other external power variations can trigger a lockout. This lockout is cleared by unplugging from power for a few seconds.
 
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Solution
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andykho

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Dec 16, 2014
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4,510


I dont really get what you said since i am not a techie guy.. But i get some of the ideas that you had said. Do you think that by adding a PSU with pure sine wave, i can fix this power interruptions?
 
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westom

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Power interruptions can occur for many milliseconds - often longer - without affecting any properly designed computer. That interruption is completely different from another anomaly such as harmonics - an unpure sine wave.

Relevant is what a PSU does. It first converts 120 volts into well over 300 volts. With filtering before and after. Then converts that to high voltage, high frequency spikes. If any power is 'dirty', a power supply converts that into even dirtier power. Then superior cleaning filters and regulators convert that 'dirtiest' ;power into rock stable, low DC, and cleanest voltages for CPU and other semiconductors. IOW it matters little how 'clean' AC power is since any properly designed power supply makes dirty power (many anomalies) irrelelvant.

Meanwhile, I believe you said 'PSU' when you meant a 'UPS'. A UPS in battery backup mode can be so 'dirty' as to be potentially harmful to motorized appliances. And is ideal power for any computer. A UPS does not output pure sine waves as so many urban myths claim. These paragraphs demonstrate why many if not most recommendations are based in technical ignorance. Including the 'usual suspect' called a surge. Recommendation is best ignored when it does not say why - as demonstrated above.

So, again. A power controller decides when a computer power cycles. It even decides when a computer's CPU is permitted to execute. You symptons imply operation of that controller. Controller can protect hardware from repetitive power interruptions. If that exists, then get household wiring fixed since, in some cases, that can be a serious human safety threat. Other anomalies are made irrelevant by what a PSU does.

So far, we are only putting out fires created by technically niave assumptions. Useful recommendations concentrate on why that power controller (apparently) is powering off your computer. Unfortunately we are spending time eliminating myths (wasted time) by explaining how hardware really works (useful information),

So three options exist. Just start replacing hardware until failures stop. Second, take it to a shop. Or third, start collecting facts to identify the defect before trying to fix anything. Only the third option requires assistance from others.
 
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