wade8876
Just put together a new build with a used 1080 Ti SC2 hybrid I bought off ebay. Everything seems to work fine and the computer boots fine but I will get random black flickers like the display loses connection whenever I change windows or have a video going and then whenever I try to load a game the game just crashes. I'm not sure if I have hooked something up wrong or not... I've tried different cables on different ports from the PSU. It's a corsair RM750x and z390 Aorus Master mobo. Any help troubleshooting before I initiate a return on ebay is much appreciated. 

How do you have the GPU connected to the PSU? You should be using two separate PCIe cables from the PSU. If you paid less that what is the going rate.... You could try running the GPU in debug mode which you can access under the Help section in the Nvidia Control panel. This will cause your GPU to run at the reduced vanilla boost clocks while under load until you reboot. Though if you're seeing issues simply running apps on the desktop, it's probably the GPU.

wade8876
Yes two different PCIe cables. I figured out if I uninstall all the recent drivers and let windows install the nvidia default driver the card works fine. Once I try to update it, it becomes completely unstable.

Then I would suggest you try using DDU or Display Driver Uninstaller.  You can get the latest version here https://forums.guru3d.com/threads/display-driver-uninstaller-thread.379506/page-90#post-5622625 That thread at GURU3D saves a lot of typing. Personally I only install the Driver, audio  (as I use HDMI) and PhysX. I do not install GFE or the 3D compenents. You might try and see if nuking the driver that way an installing the latest version works. Also, what version of Windows are you using?

So I have reinstalled windows and tried the 399 driver and still no difference. I tried to run a benchmark and everything on the PC functions above average except the GPU. It flickers and the screen loses connection throughout the test. I also tried the software to wipe out the GPU drivers and that didn't have any effect either. Also, Im using Window 10 Home

Display Port but it happens on all ports.

Vlada011
First advice I give to everyone with Pascal.
Don't use 4xx drivers.
I don't want to say that NVIDIA do something but if these drivers cripple Pascal and work good on Turing NVIDIA profit significant.
 
I use 399.xx driver, last before Turing show up and I don't want to change him. 
4xx.xx series cause me problem on GK110/GTX780Ti and I experienced little slow down in score with GTX1080Ti. 
After that I uninstall drivers made with one task... To improve performance of Turing in newest games and place for anything else.
 
 
 
 
 
 

Ive had no issues with the latest 4xxx Drivers on an Evga 1080Ti SLi w  Full EK Blocks .....the 4xxx Drivers are fine with Pascal...

Perhaps they tested it and found no issues? They should send some sort of "report" or "summary" if thats the case I would think...

Called EVGA and they said they sent the same card back because it passed all their tests. Unfortunately still having the same issues. We did look in the bios and the 12V rail voltage was fluctuating every couple seconds between 12.168 and 12.096 so they said I should RMA the PSU because this is greater than .05V. I have another power supply coming to test this but not sure if this is the issue. In the windows event viewer it says it is a graphics driver crash so I guess that could be caused by the PSU. Any suggestions are appreciated.

Understood, I've been trying to figure out how to test under load but not sure how. Any suggestions? I took the PSU out and tested with a multimeter but again, this is under no load.

Any luck yet bud? I got the same card, have gone through so much trouble shooting its not funny, I can RMA but being without the card would kinda cripple my work for at least a week to a month. At the end of all this I'm 99% convinced its been both windows and nvidia related drivers.

Couple questions are you running 2 monitors? If so are they the same refresh rate? What is your power profile in windows and nvidia control? Put it both on high performance. What's your mobo and chip set? Theirs a couple settings I can see if it would help.

Google TDR 1080ti and look at your event logs to see if it lines up with what the error those people have. Theirs a bunch of different solutions to try if so. Also sometimes its the stock OC on the card. You can try to under clock by a tad with afterburner and a adjust the fan speed to manually spin faster cause imo the fans do kinda suck for the SC2. The individual Senors in theory is great for heat dispersion but I've now talked to over 10 people who's had something with the card. Usually driver failure or black screen and full fan speed after it happens.

OH and I just tested the driver nvidia released not even 2 hours ago and its solely a bug patch driver. Booted up war frame and it seemed smoother then a long while. I've been through a number of drivers. Make sure to DDU if you do change the driver and custom install > clean install and unchecked everything but the driver itself. Hope something helps but you're not the first or the last.

An update;
 
I reinstalled windows from scratch, and put on the new nvidia drivers. Got the same issue. I uninstalled them using DDU and let windows put on its version of Nvidia. From what I can tell it installs 388.13. This is more stable but I still see the issue and notice stuttering video and it wanting to crash. 
 
I was testing a video with Precision XOC running and noticed that when I start playing the video the voltage will try to jump to 1+ something and for a split second the video looks great and then immediately the voltage falls back down to either .825 (Where it was at idle) or drop below that and the video will just have poor performance. Like it was trying to draw more power but failed and is trying to run at the regular voltage it had at idle. There's no voltage or power limit coming on.
 
Updated to the most recent nvidia driver and did the DDU uninstaller. Immediately had a more drastic increase in issues. Same problem where the voltage will rise and fall back down and the driver crashes. Sometimes out of no where it will be completely fine but restart and it will come back.

wade8876
So I checked the PCIe plugs and got between 12.07 and 12.08v. Wouldn't this reading be when its not under load though? 
 
I am running two monitors one is 60 fps and the other is 144. Power profile is at high performance or whatever in both nvidia and Windows. Tried unplugging either monitor and it would delay the driver crash but it would still happen. The GPU always spikes to 100% right when the crash happens. I can make it happen by playing a 4k video from youtube everytime.
 
Motherboard: Gigabyte Aorus Master Rev 1
Chipset: Intel i7 9700K
 
Tried underclocking and running the fans at full speed, made no difference. Tried reinstalling the drivers using DDU many times with no change. 

Okay, was this while running a benchmark or a game or something? It does not accomplishing anything unless you're actually watching the voltage vary under load. The PCIe plugs simply supply power from the PSU. If you load the GPU while measuring the voltage at the plug at the GPU, you get the precise voltage being supplied to the GPU under load (within the accuracy of your meter of course).

Nope, doesn't look like a psu issue.

When I try to install anything from back in November 2017 I get the error "This NVIDIA graphics driver is not compatible with this version of windows."
 
-Edit;
The earliest I could find on the Nvidia site that was compatible was feb 2018 which is 391.01. I installed this after running DDU in safemode and it appears to be functioning more like how I would expect it to. I'm going to have to do more testing tomorrow but I haven't seen a crash yet. I'm not totally convinced this is fixed just yet because I've had it work before only to come back in a few hours full force but I will update tomorrow.

Actually, if you're running a Gigabyte motherboard that's probably the issue.
I have never had a Gigabyte mobo that didn't give me problems, particularly with GPUs.
I'd stick with EVGA or ASUS,  and stay away from both low-end boards and newly-released ones in all cases.
ASUS makes good high-end boards for which EVGA doesn't have comparable models, but EVGA stuff has waaay better doc and support

Glad to hear it was just a driver issue.