Help with trouble-shooting...

wilko49

wilko49

wilko49

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Joined
29 Mar 2010
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831
Hi all, I've been trying to help my friend put together his rig, but it's not the most stable beast. Spec is:

i5 2500K (not overclocked yet)
Gigabyte z68-ud4
Corsair Vengeance low profile (2x4GB)
2x Palit GTX580 3GB
3x LG 3D monitors
OCZ ZX 1250W
OCZ 240GB Vertex
WD Green 3TB

Problems so far have been:
  • System powers down immediately upon starting a Furmark stability test when SLI is enabled (except for one time when it was not full-screen). Does that have anything to do with this http://www.geeks3d.com/20101109/nvidia-geforce-gtx-580-the-anti-furmark-dx11-card/ ?
  • It also powered down during a game of Portal 2 using NV surround after about 7 minutes.
  • The NVidia drivers crash fairly often, despite re-installing.
  • There was some horrible cap-whine, I think from the PSU, when running the WEI.
  • Keyboard and mouse also lose power frequently, which can only be fixed by rebooting the machine.

So... I'm thinking maybe there's an issue with the PSU, but I can't test it until later in the week. Anyone have a better diagnosis?
 
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well i heard that all of gigibyte z68 board have been having some stability issue of late, but you mention you heard or thought you heard a sound from the psu it could be a fault psu. the symptoms you mention can be casued by a psu not powering the system correctly but you write it a 1250w psu so there should be more than enough power their to power the system and still have power for other thing. i don't know too much about ocz psu as they only really just start out in psu area, i've would have gone for a corsair psu for the sole reason their got a really good track record or some other well known company that have make psu for years. try removing one of the graphic cards then test if it stable then swap the card around to see if it could be a fault card if it still stable then again try with both cards init if it fails or shut down then it most likely it is the psu cause the fault in the system.
 
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Ah really? I hadn't heard of issues with Gigabyte's boards.

The system will run Furmark as long as SLI is disabled, and won't power itself off - however, all of the other issues remain. I don't doubt 1250W is enough to power the system, but rather believe the PSU may be faulty and hence not providing that full power.

I'm thinking it could also be a motherboard fault... will have to cannibalize my rig to test.
 
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