Solved PC having fan or motherboard issues?

August 20, 2017 at 11:55:50
Specs: Windows 10
So I built my gaming pc about two months ago, and just over these past two weeks, about half the time I use my computer, the screen suddenly goes black and the computer becomes unresponsive. Right after that, the fans inside the pc get really loud like they're going into overdrive. This continues until I do a hard shut down. I thought it could be a motherboard problem so I updated the BIOS. It still happened. Then I dusted the inside of the pc and installed water cooling, just to make sure that it wasn't a heat issue. However, these instances are becoming more frequent, until just today when I was only 5 minutes into using my computer when the screen went black and the fans kicked into high gear. This hasn't happened ever when I'm playing games, only when idle or browsing the internet. I have no clue what the problem is. Here are my specs

Core i5 7600k

EVGA gtx 1070 FTW

Gigabyte Z270XP-SLI motherboard

Seasonic S12 Bronze 520W power supply

Thermaltake Water 3.0 rgb water cooling

Windows 10

16gb Kingston hyperx ram

WD blue 1TB hard drive

WD 250gb ssd


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✔ Best Answer
August 20, 2017 at 18:26:16
I almost certainly have less relevant experience than any of
the above three responders, but I'm going to disagree with them.
The fans going to high *after* the screen conks out and the
computer apparently becoming unresponsive sounds like the
fan speed controller stopped working when the motherboard
stopped working. No control means the fans go to full speed.
The motherboard *could* stop working because of overheating,
but it could also happen for all sorts of other reasons.

-- Jeff, in Minneapolis



#1
August 20, 2017 at 15:20:24
You didn't post any temp readings. Fans revving up is usually due to overheating. Whether you have a heatsink/fan or water block, it's very important to apply the thermal paste correctly. All Core-i series desktop CPUs use the vertical line method. If you applied paste any other way or used too much or too little, it can cause overheating, freezing, random shutdowns, etc.

http://www.arcticsilver.com/pdf/app...

https://pc4u.org/wp-content/uploads...

EDIT: It's better to get a PSU with a single +12v with high amperage rather than a PSU with multiple +12v rails with low amperage. Make sure to balance the load across the two rails.

message edited by riider


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#2
August 20, 2017 at 16:09:55
Agreed, it is probably overheating. Use HWMonitor or similar to read internal temperatures when cold, at idle after 20 minutes, and under load like gaming and post the numbers (all of them).
Remove, clean off and reset the heat sink or water block with a new application of thermal compound as per the instructions referred to by riider on the link. If you are not sure you have a quality thermal compound (does not have to be expensive), replace it with one that is.
Recheck the temperatures to be sure that you have significantly lowered them.
Also post the primary voltages (12V rails, 5V, 3.3V) so we can make sure that they remain within 5% +/- of their nominal values because there is a real possibility that the power supply is a bad one (or at least a poor one) and not up to the load they claim it is.

You have to be a little bit crazy to keep you from going insane.


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#3
August 20, 2017 at 17:31:56
You also don't specify which fans are revving up. The FTW line is factory overclocked, and overclocking reduces life expectancy. If the video card fans are going full tilt, chances are good you're looking at a failing GPU.

How To Ask Questions The Smart Way


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#4
August 20, 2017 at 18:26:16
✔ Best Answer
I almost certainly have less relevant experience than any of
the above three responders, but I'm going to disagree with them.
The fans going to high *after* the screen conks out and the
computer apparently becoming unresponsive sounds like the
fan speed controller stopped working when the motherboard
stopped working. No control means the fans go to full speed.
The motherboard *could* stop working because of overheating,
but it could also happen for all sorts of other reasons.

-- Jeff, in Minneapolis


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#5
August 20, 2017 at 18:32:19
The maximum temp reading I've gotten while playing games is about 80 degrees Celsius, but normally when I'm just web browsing it's about 35. And the thermal paste was pre applied on the heat sink

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#6
August 20, 2017 at 19:58:12
"And the thermal paste was pre applied on the heat sink"
Did you scrape of the old paste from the cpu?

It seems something happens to the GPU hardware or software that causes a process to go into 100% load.
If you have an on-board GPU try that for a couple of days with the GTX1070 removed.


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#7
August 20, 2017 at 20:07:07
Yeah I got all of the old paste off. I think it may be my motherboard but I might try running it without the 1070 I guess

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