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Old September 28, 2010, 08:43 AM
Bao Bao is offline
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Default Possible PSU issue?

System specs:

Seasonic 850w M12D
i7-860 / Corsair H50
2x 4GB OCZ 1333Mhz DDR3
2x Gigabyte GTX460 -1GB
Vertex2 - 120GB
EVGA P55 FTW
---

Here's the issue: the screen will go black and audio shuts off, then it re-syncs and everything goes back to normal while playing games (SLI enabled). Sometimes it will just go black and then crash.

The problem is more obvious when the video cards are overclocked.

What could be the issue? I really doubt that the PSU is too weak unless if it's defective >_<

As far as I can tell, there were no issues while I was running just one card. Maybe the 2nd one has issues >_<
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Old September 28, 2010, 09:05 AM
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The PSU looks to be a fair bit over the minimum that you need to power that rig, I can say as much.
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Old September 28, 2010, 10:33 AM
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Sounds like a GPU issue to me.
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Old September 28, 2010, 10:38 AM
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try second card to elimimate error, also the sli bridge on correct

other check sound drivers are up to date
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Old September 28, 2010, 11:10 AM
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while plausible, when(well usually) working as it should your psu will accommodate a few more cards like the 460, if your motherboard took them.

id have to go with drivers as well. followed by card(s) followed by slot(s)
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Old September 28, 2010, 11:56 AM
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It's probably because you're not using a OCZ PSU.... ?
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Old September 28, 2010, 01:19 PM
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I have the same problems with the current WHQL drivers as well as the new beta drivers.

I'll test the cards individually now :D
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Old September 28, 2010, 01:53 PM
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I would also make sure you have completely cleaned the drivers before re-installing. Either use drivercleaner.net, or see if the new 'clean install' option in the nVidia drivers will do it.
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Old September 28, 2010, 02:10 PM
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abd if the bugs persist and even one card alone does it? load up ubuntu and run 3dgears, not much of a test but if it bakes out then the mobo's toast.

do sniff the psu, anything out the ordinary might imply trouble. in the first week or so of life burning smell can be common.
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Old September 30, 2010, 06:53 AM
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Hey guys,

The PSU may or may not be the culprit. It's not emitting any bad smells, I did buy it used from a forum member, but the condition is pretty good, no scratches, pretty much dust free...

I tested the cards individually, and they both have the same problem. However in single GPU mode it never crashes, it just goes black then turns back on a second later. I wonder if it's an overheating problem (Realtemp hasn't recorded anything really crazy high though), since I can make the problem occur more quickly and more frequently if I raise the video card speeds from 715 (stock on the Gigabyte) to anything higher. I did take off the stock cooling and applied OCZ Freeze compound, so perhaps I screwed that up, but how I could mess up with something as simple as that with two different cards ... geez, I will try to re-apply and re-test soon.

Maybe it's my fault for buying used core components, the CPU, motherboard, psu etc are used. Only the video cards, SSD, and ram are new.

Anyhoo ^^ this type of problem is why I stopped PC gaming 4 years ago.
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