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Troubleshooting a power issue

bigdogchris

bigdogchris

Fully [H]
Joined
Feb 19, 2008
Messages
19,064
I'm having an issue where my computer will shut down out of no where. It is not a reboot, it completely powers off (all lights off), then 4-5 seconds later powers back on.

Sometimes it happens while browsing the web or watching Youtube. I can repeat the problem by running Cuda accelerated video encoding. If I pull my GPU out and put in an older one the system does not shut down regardless of load.

Specs:

2500k (currently @ stock)
P8P67 PRO
8GB Corsair XMS
GTX 570 Galaxy (reference) (HD2400 system will not power off)
700 Watt Coolmax PSU
120GB Vertex 2
1.5TB WD

Swapping the GPU to the HD2400 will prevent the random shut offs. I'm able to encode video and run Prime95 stable. I just can't imagine that a bad GPU would cause the system to just power off. All voltages look good. CPU and GPU temps are within range. PSU does not smell like they normally do when they are burnt up. I'm also not getting any graphic artifacting, which also happens when PSU's go out.

I'm asking in this thread because I think it may be my PSU not providing enough voltage to the entire system. I just don't have an extra PSU capable of this load to test, I don't want to buy one to find out it's not what's causing it.
 
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I've heard that before, yet it's lasted 5 years through OCing and SLI GPU's at one point.
 
It lasted 5 years. Now it is dead.

It sounds like the 12v rail has had it. You can still encode and run Prime as your CPU nothing much apart from the 570 would be running off the 12v rail. When PSUs fail, they don't have to burn up or explode. Actually, they shouldn't.
 
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Has anyone saw a good price on a PSU lately?

Looking at this right now. Good price at the Egg with rebate and code.

Silent Pro M700 RS-700-AMBA-D3

Want 8+6 compatibility for my next GPU upgrade.
 
There have been some good deals in the [Hot Deals] section of the forums recently, some really good PSUs for cheap in there.

If you want to be sure that your PSU is the issue, and I can't see how it could be anything else, there is a stress test called OCCT.
Just beware, with cheaper power supplies it can in itself cause them to fail. I would also worry that if it is your PSU and it is failing there is a serious risk of it taking out other components in your system.
 
That happened to me with an antec psu. When pc starts to shut down al random sites with no temp issues is almost always a bad psu. Look for corsair power supplies. I've had several for about 3 years and I'm very happy.
 
bigdogchris said:
I've heard that before, yet it's lasted 5 years through OCing and SLI GPU's at one point.
Click to expand...

Well, things tend to last when you only put about half the rated load on them. What where your SLi cards?

Regardless, at this point you have a dead Coolmax, as most Coolmax PSUs usually become.

The Silent Pro M 700w is a solid PSU, but it's design is quite long in the tooth now. I'd suggest going for a more modern 550w psu.

Rosewill Capstone 550, XFX core 550, Seasonic G 550 all come to mind.
 
EVGA SuperNOVA NEX750B

http://www.amazon.com/dp/B009YC3DBS/?tag=extension-kb-20

Good future proofing with CPU compatibility. $80 AR free shipping.

BTW, who makes the Rosewill PSUs? I'm not saying no to them, I just am looking for modular if possible. The Rosewill capstone modular series are not on sale right now.
 
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Wanted to update the thread.

I started crashing, even with the HD2400. I threw in a 350 watt Antec and the damn thing ran solid for 3 days. In the mean time I ordered the EVGA via clickthrough to Amazon. I really considered the Superflower but I liked the 2 more year warranty of the EVGA, for the same money.

I put the new one in today and cuda encoded a 20GB mp4 with my 570, without crashing. I was a little worried about the partial modular of the EVGA, but the solid 24 pin and EPS 8 pin cables are very long and fit quite well.

Thanks for the help.
 
I've heard bad things about EVGA's warranty system. But, that was mainly related to graphics cards.

Thanks for the update and I hope it all works out.
 
Eh, EVGA psus tend to be overpriced for what they are. I sincerely hope everything works well for ya, I've never been a fan of FSP based units.
 
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