HELP!! Unexpected Shutdowns

garrettk4 · Jan 2, 2014

Unexpected shutdowns doing the basic tasks on my pc.

System:
i5 3570k @ 4.0ghz w/ CM Hyper 212+
P8Z77-VPRO
16gb ram
HX 750W
600T
Samsung 840 250gb
EVGA GTX 760 (Newly installed 2 days ago... Upgrade from hd 6870).

Played battlefield 4 for a solid hour last night and it didn't turn off till I was watching a video with amazon unbox. Then today it shut off while watching a youtube video.

I checked the temperatures from hw monitor and gpuz

Temperatures from the processor average around 30C
the graphics card around 28C.
Motherboard around 32C.

It doesn't make any sense if it was the gpu, I mean why would it work flawlessly on a gpu intensive game like bf4 and then crash doing something so simple as watching a youtube video.

Please help!

Onus · Jan 2, 2014

Are these power-off shutdowns, or crashes? Although you have a good one, that is easily powerful enough, power-off shutdowns suggest an overheating or defective PSU rather than a driver or other software problem, or other hardware, which would typically BSOD.

HiTechObsessed · Jan 2, 2014

By crash, is it just suddenly shutting off, is it BSOD, freezing, going black?

garrettk4 · Jan 2, 2014

Just suddenly shuts off, no BSOD.

I've had the corsair hx 750w for a year now and its worked great with my old hd 6870.

garrettk4 · Jan 2, 2014

http://www.amazon.com/EVGA-GeForce-DisplayPort-Graphics-04G-P4-2768-KR/dp/B00EIG47BK/ref=sr_1_1?ie=UTF8&qid=1388692019&sr=8-1&keywords=gtx+760+4gb that's the card I have

HiTechObsessed · Jan 2, 2014

Well if no BSOD and (apparently) random hard shutdowns, I would suspect a bad PSU. A hard drive, RAM, or GPU failure would 99.99% of the time give a BSOD, as would (normally) overheating.

Do you have GPU-Z/CPU-Z to monitor temps? I would look at your temps on everything, and if those are normal, possibly try another known-working PSU.

garrettk4 · Jan 2, 2014

If it makes any difference I had a gtx 770 for a week and I had no problems with it shutting down. I had to return the gtx 770 for other reasons.

Onus · Jan 2, 2014

If the GTX770 had to be returned, is there any possibility it damaged your PSU? That really looks like where the issue is.

HiTechObsessed · Jan 2, 2014

I would also make sure your heatsink and fan is working right. Check your temps when running a game or something similar.

Onus · Jan 2, 2014

If a VRM is shorting, it will cause these shutoffs; usually though I'd expect that to be a permanent condition, not one that only happens when it heats up.
If your PSU senses a short for any reason, on any rail, it will shut off.

garrettk4 · Jan 3, 2014

The Gtx 770 was returned due to its bad memory & that I spent too much $$.

I took a pic of the event viewer that I found in Geforce Experience, http://tinypic.com/view.php?pic=1h8lls&s=5#.UsZTB_RDvMs all of the errors are the exact same.

And what do you mean by VRM? Video ram?

Onus · Jan 3, 2014

Voltage Regulator Modules...which provide power to the CPU. There will be one for each power phase.
I had a VRM fry shorted on a board, so the PSU would shut off instantly if the CPU power cable was plugged in, but not if that cable was disconnected (i.e. "the lights are on, but nobody's home").

garrettk4 · Jan 3, 2014

So its the motherboard that's bad?

And last night I saw a warning saying that the vcore was at 0 and then it disappeared immediately

garrettk4 · Jan 4, 2014

So what should I be RMA'ing or replacing at this point?

Onus · Jan 4, 2014

I believe the problem is either with your motherboard or PSU, more likely the latter. I think you should test your system with another PSU first, if possible.
Does your PSU get good airflow through it? Does it draw its own air from beneath your case, or does it exhaust case air? If the latter, do you have a balance of intake and exhaust fans, or do you have all or mostly all exhaust?

garrettk4 · Jan 4, 2014

Ok I'll put the 760 back in. I have a corsair cx 430 & a raidmax 850w ae.

My Psu is on the bottom, draws air beneath the case.

On my 600T I have 1 intake 200mm fan, 1 exhaust top 200mm fan, 1 exhaust 120mm fan back.

Onus · Jan 4, 2014

The 430W CX is obviously not sufficient. Is the Chokemax one of their 80+ bronze or gold models? If so, it would be safe to use to test, otherwise it too may be unsuitable or dangerous.
Your PSU isn't fighting fans to cool itself. Is its own fan running? Does the PSU feel hot when it shuts off?

garrettk4 · Jan 5, 2014

It's a gold model, & the corsair hx 750w model uses the fan only when its under load so I would need to put it under load like play a game right?

Onus · Jan 5, 2014

Yes. Perhaps its defect is that the fan isn't coming on, and it is overheating and shutting down. If you feel it getting hot, one way to help it would be to turn it over, and then reverse one of your exhaust fans into an intake, so air is pushed out through the PSU even when its fan isn't running.

garrettk4 · Jan 5, 2014

K I just played a game with my 6870 with my psu on starcraft 2 and had no issues, while I didn't witness the fan coming on I would imagine on a game like sc2 that it would come on.

Onus · Jan 5, 2014

Don't "imagine," as whether or not the fan is coming on is the critical detail if the problem is your PSU overheating.
Turn the PSU over (fan-up) and put a case fan on it to blow air through it; then test with the demanding titles and higher-powered parts that caused crashes before. If it no longer crashes, then RMA the PSU for overheating.

garrettk4 · Jan 5, 2014

Ok so I have a furmark gpu stress test going, the gpu is hovering around 74C. I flipped the psu over & the fan is running & I have a case fan over it blowing additional air into it. The test has been going for about 15 minutes so far.

Onus · Jan 5, 2014

Hmmm, the PSU's fan is running? What happens with the GTX760?

garrettk4 · Jan 6, 2014

Idk, I ran the gpu stress test over an hour (I know you are supposed to do it for a lot longer I didn't have the time). It worked just fine.

I also did a hour of stress testing the cpu with prime 95, no errors

Maybe it was just a freak thing and now its resolved. Anyways I'll post back if I have issues again, thanks Onus & everyone for your help

Onus · Jan 6, 2014

Hmmm, maybe there was something wrong with the fan? Strange...

HELP!! Unexpected Shutdowns

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