PC shuts down under heavy load(Gaming)

Slvr99 · Apr 13, 2016

My computer just shuts down while running GPU-intensive games. While running a stress test, it seems the GPU temps don't go past 75c and CPU itself doesn't go beyond 84c. I have a stock CPU fan but I'm not overclocking anything on the PC. Here's the specs:
Mobo: ASUS Sabertooth X58
PSU: Corsair TX850W
GPU: Galaxy GeForce GTX 770 2GB, not overclocked
CPU: Intel i7 950 3.06GHz, not overclocked
RAM: DDR3 [Slot 1 & 2: PNY 4GB(2GB each slot)] & [Slot 3-6: Corsair Vengeance 16GB(4GB each slot)]
HDD: Western Digital 145GB(Don't know the speed/model)

I have previously used a GeForce 550 GPU and the problem was still occurring then. I also used to have a bad PSU before this one and the problem still existed then. I'm thinking either the issue is my CPU itself or a CPU overheating issue. Any ideas?

Side Note: I recently was getting BSODs on Windows Startup that said "A clock interrupt was not received on a secondary processor". I got it only from a cold startup and recently has stopped occuring. This is my reasoning on why it may be a CPU issue, but it might be irrelevant since it never happened when this issue started.

Ironsounds · Apr 13, 2016

Hello... As a "simple test" remove a cover from your case and re-test and monitor Temperature drops.

kittle · Apr 13, 2016

well if you "used to have a bad PSU" then its quite possible the bad PSU damaged your CPU and now your seeing the results of that. Also - it could damage other parts of your system that makes it seem like a CPU problem (motherboard).

While not damaging - 84c seems rather hot. my i7 980 rarely goes above 70c even under load with all 6 cores maxed out.

But if your pc shuts off while running GPU based games, then that points to your graphics card. Your existing PSU should be more than enough to handle the graphics card and CPU.

First - do a sanity check:
both PSU power cables plugged into the motherboard?
PCI power cables from the graphics card plugged in?
CPU fan cleaned of dust and pet hair?
GPU fan cleaned of dust and pet hair?
case fans pulling air in and pushing hot/warm air out?

Next - As you said, a CPU stress test by itself is fine, and a GPU stress test by itself is fine. But both of them together when running games causes a shutdown -- Normally this means a heat or power problem, but your PSU is plenty big enough and the temps you listed arent alarming, so it points to a bad CPU, or motherboard or possibly GPU (doubtful because its newer)

lastly - some poking around on the web shows max "comfortable" temp for an i7 950 is 80c, so you may want to look into an upgraded cooler. But I dont think that will solve your shutdown problems.

Slvr99 · Apr 13, 2016

Ironsounds :

kittle :

I have checked all the cables and they're plugged in properly. And same with the fans, although I don't have a case fan, I just run the PC without a cover so air can flow out of it.

I just decided to clean out all the components of dust and reseat everything. I found out that my Mobo wasn't even seated on the case properly and it's a miracle it wasn't shorting. I added the little screw pegs to seat it right. I also re-fluxed the CPU. So far, the temps for CPU have dropped about 10c from their usual temps so that's a good sign. I haven't done extensive testing or done any gaming yet though so I am unsure if this fixed my problem. If it did, then the CPU heat was the issue and I may need to upgrade my cooling.

kittle · Apr 18, 2016

Slvr99 :

Unless you live in a perpetually COLD climate, you will need 1 or more case fans for your PC. Running with the cover off is fine until somebody or something pokes at your PC and causes problems. plus there is more to cool than just the CPU / GPU. Using case fans will keep air moving over your motherboard and keep stuff cool.

Slvr99 :

It sounds like half (or more) of the issue was a badly seated cpu cooler. Hopefully that solves your problem.

if you want to upgrade, I have something like this on my i7 980x
http://www.newegg.com/Product/Product.aspx?Item=N82E16835426050

its run just fine for the past 5 years

Slvr99 · Apr 18, 2016

Thanks for the replies. So far after cleaning my CPU fan and re-applying flux to the CPU itself, it hasn't shut down since. I suspect it was an overheating CPU due to to the fan being obstructed by dust.

Ironsounds · Apr 18, 2016

Hello... Part of the 'Simple test" is to get the Owner to open up their computer and "take a look around" and an Obvious problem, noise, Dirt, lint, or situation can be seen. B )

If you have a OEM or "plastic push-pin" Cooler, after market is needed for your i7 950 .

Slvr99 · Apr 18, 2016

Ironsounds :

After market isn't needed unless you're overclocking. I've been using the default 950 cooler that is included with the CPU and it seems to work fine with no overclocking.

Ironsounds · Apr 18, 2016

Hello... The Reliability of the Plastic "force" connection over Time/Temp/Fatigue, AND could be the situation here... The Aluminum does most the work and that contact/pressure to the CPU is a BIG factor in the Physics going on here... I typically see 20C drop in temps with any thing that isn't a PUSH-PIN design. The OEM Fans can give trouble free performance in the "Office"... and I build with them in some situations... Not in the tropics, equator zones... OR Gaming machines... your CPU Thermals, lies in the balance of FOUR Plastic Pins. B O
It's good too see intel is not shipping any more OEM's with the "k" processors... It lets you know from the start it is not good enough, a new builder needs to define their CPU Cooler, for intended use, in their build design.

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