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Hi, I bought a i7 920 + gtx 295 two years ago and after having some ram and mother board problems for quite a time with wow I had at last fixed it all.
But two months ago, I started having this problem. At some point, the screen suddenly goes black, and the computer crashes, and the light at the back part of the GTX 295 turns red. The weird thing is this only happens with sc2, after raiding every day for two years in wow and playing top-graphic games like aion, metro 2033 or formula 1 this NEVER happened before I started playing SC2, and I am almost sure that it never happened in beta. Also I have turned the graphical settings from ultra to high and I think this is happening less but cant really be sure its that.
I know this probably is just over heating and a heat sink would fix it all, but I am really lazy and dont really have that much time with work and all to go and buy one, so I was lookinf for advice here, hopefully somebody has come across the same problem.
Thanks and all 
Edit: pressed enter with only one word written lol
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Don't post in this forum anymore if you're going to post useless threads like this.
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I am sorry I misspressed enter 
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I was actually having very similar problems with my gtx295. In fact, just today I got EVGA to RMA my card (which I too bought with a 920 back at the start of 09... are you stalking me?). I have had random problems off and on, most of which started after a thunderstorm. Anyways, I ended up having to replace my power supply, as I was only getting 10.5volts on my +12v rail (corsair tx850 if you care). I'd recommend making sure you are getting proper voltage on that 12v rail. Your card might be incorrectly powered. Check it in your BIOS, usually under pc health, or something to that nature.
Also, I started recently getting problems with graphics card driver errors. I do not remember seeing a red light, but I did have my computer give a black screen a multiple times, eventually crashing a couple times, and I even had some video artifacts appear, such as white dots, and an extreme problem with the colors on screen at one point (happened during a ladder match, and I ended up doing a hard reboot in panic).
I'd recommend starting up a support ticket with whomever manufactured your card, and make sure you are within warranty. Either way, they will surely help you troubleshoot your problem. Hope that helped in some way...
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do u have vertical sync ticked ? if not, tick it. might help. also what is your GPU temperature while u play sc2 ? do u have the fan at 100% already ? if not set it to 100% and consider buying compressed air and cleaning ur card with it 
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If the GTX295 is anything like my 9800GX2, the indicators on the inside of the card are to show the power state... it seems that your power supply is having trouble maintaining the +12v rail as Lurker87 said. Power supplies can slowly deteriorate over time if they are stressed beyond their capacity, so I would think that's why you didn't have problems with this before.
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there is a known problem with SC2 overheating and drawing way more power of the GPU than required, I think they supposedly fixed this in the 1.1 patch but who knows.
cap your SC2 framerate to 60fps.
The next thing to do, would be to check your PSU and see if its properly supplying your GPU with power.
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I thought about the power supply thing, but could that happen after two years of buying it? what thehitman says about SC2 requiring more power might be it I dont know.
I did check Vsync yesterday and it didnt crash but I only played 3 games yesterday and I wont really be able to play calmly untill the weekend. About the warranty, i Bought this card in the 2008/09 christam so doubt it, but I will try all of this, thank you all
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On November 03 2010 17:40 thehitman wrote:
there is a known problem with SC2 overheating and drawing way more power of the GPU than required, I think they supposedly fixed this in the 1.1 patch but who knows.
cap your SC2 framerate to 60fps.
The next thing to do, would be to check your PSU and see if its properly supplying your GPU with power.
That is still not a SC2 problem. Maxing the GPU for normal usage isn't a problem. They are supposed to be able to take stress tests which are much rougher.
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if u want to be sure that its ok, and in short time. download furmark, and stress test it, if its ok after 30 mins of test, no game will ever make it crash. be sure to do it @ 100% fan speed and monitor the temps during the test cuz its really extreme stress test.
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On November 03 2010 18:48 Yurie wrote:Show nested quote +On November 03 2010 17:40 thehitman wrote:
there is a known problem with SC2 overheating and drawing way more power of the GPU than required, I think they supposedly fixed this in the 1.1 patch but who knows.
cap your SC2 framerate to 60fps.
The next thing to do, would be to check your PSU and see if its properly supplying your GPU with power. That is still not a SC2 problem. Maxing the GPU for normal usage isn't a problem. They are supposed to be able to take stress tests which are much rougher.
It may be a problem if his PSU is not good enough.
a 600W psu with no 80+ certification acts more like a 350W psu.
On the other hand say a 400W psu 80+ certified won't be enough for system components.
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On November 03 2010 18:10 Matkap wrote:
I thought about the power supply thing, but could that happen after two years of buying it?
Absolutely it can. As I said in my previous post, you and I have very similar builds, GPU and CPU-wise, so the other hardware components shouldn't be that far off either. There are only so many lga1366 motherboards out there, still somewhat limited decent tri-channel ddr3, etc. And despite me having build my computer back in Jan '08, it was not until about 7 months ago that I had the problem with my power supply.
No matter what, take a look at the PSU. That is always one of the first parts I troubleshoot, cuz if that goes, your whole build is at risk.
Conceivably, if you chose a PSU with a very weak +12v rail, that could be the bottleneck right there. I'd not get under 45A@+12v, for such a multi-gpu card, and power hungry system. Any decent Corsair will provide this, but some of the lesser brands might have absolute crap specs. Could you tell us the model PSU? And, what does it say you are drawing from your +12v rail? You can check that quickly in the bios.
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Just wanted to let you know that Vsync definitely solved the problem, havent had a crash since, thanks inermis and everyone else that took the time to post
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On November 25 2010 21:53 Matkap wrote:Just wanted to let you know that Vsync definitely solved the problem, havent had a crash since, thanks inermis and everyone else that took the time to post
That's more of an indirect solution. Vsync limits the framerate which is going to lower the stress on your graphics card... the underlying issue is still very likely a power one.
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i have the same probleme since months
many time after a thunderstorm
today there was a thunderstorm , electricity goes down and since , my card crash many times
is there a solution under the bios to fix voltage or something ?
pls help, thx !
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On October 01 2012 05:04 2hp wrote:
i have the same probleme since months
many time after a thunderstorm
today there was a thunderstorm , electricity goes down and since , my card crash many times
is there a solution under the bios to fix voltage or something ?
pls help, thx !
Oh lord ... , no there's no solution but replacing the affected parts by the thunderstorm, anyway, if you have affected parts still in warranty try to replace those. Other than this advice , tough luck...
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EPT
