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EVGA GTX 970 SC ACX 2.0 keeps crashing to black screen with loud buzzing noise - Page 3

post #21 of 26
Boot into safe mode and run DDU: http://www.guru3d.com/files-details/display-driver-uninstaller-download.html
Uninstall the nvidia drivers, reboot in regular Windows mode and re-install the latest ones (if the same happens maybe try older drivers)

Did you try another PCI slot for the GPU?
    
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post #22 of 26
Thread Starter 
I have already uninstalled the drivers using DDU and tried many different ones. Some versions I tried were 30 revisions behind.

How I wish it were a simple power supply issue, but alas, the first thing I did when I noticed this issue was go out and buy a brand new 750w Thermaltake Bronze Certified. It does not appear to be my issue.
post #23 of 26
If you are extremely confidant it is not the PSU (I still have my doubts, you could have purchased a defective PSU), the next step as far as troubleshooting would be to build the PC outside of the case to ensure this isn't an issue of the motherboard expanding when heating up and shorting out within the case. You never answered if you are running on a UPS, if so try connecting directly to the wall and see if that resolves the issue. You might even consider using a different electrical outlet within your house (preferably one on a different breaker) to rule out that as a cause. It really doesn't sound like a driver issue to me, and if it was I think it would have been much more easily identified. CPU/Ram/GPU instability rarely lead to hard crashes like you are describing, especially so in the absence of other symptoms such as visual artifacts for GPU issues and BSODs etc for Ram and CPU.

Keep us posted, and once gain, best of luck.
Edited by tubnotub1 - 6/11/15 at 1:19pm
post #24 of 26
Thread Starter 
Here's an update for those of you who are experiencing a similar issue. I discovered that many people have been having trouble with Nvidia's Streamer Service crashing their video cards. While it does not do this by default, it can cause high end hardware to experience higher chances of crashing under heavy load. I disabled the service about a week ago and have put my rig under heavy load on a regular basis since then. It has not crashed since.
post #25 of 26
Thread Starter 
Unfortunately, my crashing problem came back with a vengeance upon putting my rig into a new case. Based on the fact that I was able to replace the "faulty" memory stick and run the benchmarks without crashing if I set my fan curve to Aggressive in Precision X16, I believe this issue is related to inadequate VRM cooling via the EVGA ACX 2.0 cooler. Due to the lack of a back plate, the Memory Chips appear to get extremely hot. While the cooler succeeds at cooling the GPU with lower fan speeds, it fails to keep the VRMs cool unless the cooler is running at extremely high speeds. Unfortunately, it appears that this issue is inherent with the design, since my RMA did not solve the issue. For now, I will keep my fan curve high (especially since my new Define R5 is amazing at noise isolation!) and hopefully in the future I can find a way to reduce temperatures AND noise. I'm considering using the Kraken G10 and a AIO cooler, but I am uncertain if that would help or hurt my overheating VRMs situation. If anyone has experience with this, please let me know. My other possible solution would be to get a full-cover water block for the card and go ahead and build a custom loop. So I guess for anyone who stumbles across this post, I have two questions remaining:

1. Does anyone know a good place to get an EVGA GTX 970 SC ACX 2.0 Waterblock? The design is different from Nvidia reference so it needs to be tailored to this specific design.
2. Does anyone know if the fan on the Kraken G10 is better than the ACX 2.0 cooler's fans at cooling down VRMs?
post #26 of 26
Back from the the dead much?

If you OC this particular card much over factory OC clocks, you need to manually set the fans to like at least 40-45%.

The VREG cooling seems to be subpar and the factory fan curve isn't good enough.

With my OC, a game will crash with black screen, and looping audio, forcing me to hard reset the system.

When I use the same OC, but have my fans at 45%, no issues.

If you look at the design of the heatsink from some of the reviews online, the VREG are contacting the cooling fins awfully close to a heat pipe that dissipates like half of the GPU heat.

I'd wager this design actually heats up the VREGS or at least severely nullifies cooling performance.

If you look at the MSI and Asus 970 cards, the VREGs have a heat sink separate from the large one that cools the GPU and no GPU heat can leak into the VREGs or severely hamper their cooling.

tl;dr keep fans over 40-45%
Edited by umeng2002 - 6/21/16 at 9:26pm
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