Ran stress test for GPU - caused whole PC to crash and die?

TehZylem

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Nov 22, 2015
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Specs: CPU - i5 8600k OC'd to 4.8 Ghz
RAM- 2x8gb ddr4 corsair vengeance 2400 mhz
GPU - MSI GTX 970
CPU Cooler - H75 Corsair watercooler
Motherboard - Asus z370 A Pro
PSU- Atrix 600W

So I recently put together this PC, all components were recently bought (within last 2 weeks) apart from the GPU and PSU. I successfully Overclocked my CPU to 4.8ghz and decided to try and push my GPU a bit. I downloaded MSI afterburner, and MSI kombuster. I started my overclocking process by slowly raising the core clock speed by 40mhz every 30 seconds and looking for any freezes or flickering in the MSI kombuster stress test. When I got up to 160mhz I decided to tryout a game and see how it went. It seemed fine at first and I definitely saw an improvement in FPS however after around 10 mins my PC crashed and automatically restarted. I then lowered the core clock speed by around 30 and relaunched the game, confused because it seemed fine in the stress test. Again the same thing happened, my pc crashed after around 10 mins, restarting my pc, I done the same thing by lowering the core clock speed and repeated this process around 3-4 more times.

Eventually I had enough and decided to try and stress test from the start but for longer intervals. I decided I would start from +40 mhz core clock speed and raise every minute by 40. Everything seemed fine, however after around 40 seconds after I got to 120mhz my PC completely crashed. When I went closer to my PC I noticed a strong burning smell. When trying to relaunch my PC all I could see was my fans start to spin for a split second, my motherboard lights turn on for a split second, and that was it.
I replaced my PSU, removed my GPU and tried to start the PC... again the same problem. Did I fry my whole PC? what did I do wrong? any help is appreciated thanks.
 
before you ran the overclock was the mb bios up to date?? there been issues with nvidia gpu and intel mb with older bios. have you tried clearing the cmos of the mb?? have you looked at the back..top of the mb where the vrm to see if the power supply when it failed did not fry them. also smell your video card see if it failed. right now i would rma both the mb and cpu just to make sure if one is bad you wont kill the other when you rebuild.
 

TehZylem

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Nov 22, 2015
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Would you say that the rest of my PC is fine? such as RAM, GPU, SSD and HDD?
 

PdxPetmonster

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Mar 14, 2017
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You may be able to salvage some of the components, but you won't know which are ok until you replace the motherboard and CPU. If you have access to another PC, maybe a friends, see if you can connect your drives etc, to that machine, and check to see if they are good or not.
 

TehZylem

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Nov 22, 2015
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I didn't check if the MB Bios was up to date but it was a newly installed MB with up to date drivers so I'm not sure. Will I be able to RMA my CPU ? since I did OC that, and finally is it ok to test my current GPU with my new motherboard and CPU when I get those... is there any risks involved such as the GPU potentially damaging my motherboard and CPU.
 

asoroka

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Apr 19, 2009
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You will not be able to RMA your CPU it has been OC and there is clear damage due to excessive voltage. You can try old CPU and memory in new mobo.
If that does not work try replacing memory and finally CPU and then GPU.

You may get lucky.

If you are going to OC you need to have a high quality PSU and motherboard, also the capacity of your PSU needs to match the load, (600W is not enough).

 

TehZylem

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Nov 22, 2015
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Ah alright, I'll try to RMA my cpu too and get a new graphics card , thanks alot for the help I apopreciate it.
 

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