Dual 1080ti make my system unstable and black screen

[RichardBao]

Hi guys, I got some problems with my set up.

I have 2 Asus Rog Strix 1080ti, I have tested them on my pc and they work good. and also test in 3d mark, give me 10000+ score, and everything works perfectly, but when I stack them together, the win 10 system became very laggy, not responsive, and frequently black screen(recover in few seconds, sometimes I need to turn off and turn on my screen to make it work) Chrome not responding frequently, when I do some rendering, it gets worse, software not responding and crash frequently. I don't know what's the cause, I used Nvidia Experience download studio driver(always keep the latest driver), I also try game driver, not working as well. And my mouse frequently not responding when I use dual GPU. I have no idea. this is frustrating.

I test my GPU individually today and the system performed well.

It could not be a power issue since I am using a good 1000w PSU.

The rendering program I am using is Blender.

CPU: AMD 3900X

anyone who has tips or suggestions, please help me out!

 

 

 

Update: Here is the latest update, i made it work after tried few versions of BIOS, but in the evening, it fails again. And here is the detailed description and all the error i can get in safe mode.

https://answers.microsoft.com/zh-hans/windows/forum/windows_10-hardware/windows-has-been-frequntly-reboot-or-freezing/5075c359-42d3-43d6-a57d-195eec828355?tm=1571798296087

Anyone help solve this, i would like to provide 50 bucks as reward.

Edited October 23, 2019 by RichardBao
Update

[Guest]

What are the rest of your specs? Please include models. Especially the MB and PSU.

[RichardBao]

23 minutes ago, Den-Fi said:

What are the rest of your specs? Please include models. Especially the MB and PSU.

MB: Asus X470 f gaming

PSU: Corsair rm1000x

ram:32gb

GPU: Asus Rog Strix 1080ti oc 11gb

CPU 3900X

 

[Ravendarat]

Maybe your bridge is defective?

[RichardBao]

21 minutes ago, Ravendarat said:

Maybe your bridge is defective?

Do you mean the bridge on MOBO? or the SLI bridge?

I dont have SLI connect, and the mobo should be OK, i am now doubting if its the Logitech option software that make me crash, since it prompt alert window every time i shut down pc

[Ravendarat]

I meant SLI bridge, I had assumed you were using one

[Mick Naughty]

Well if you took the bridge off, which I assume was on if you used that to “stack” them, did you also take a card out and see how the system reacts?

[DoctorNick]

Sound like a driver issue? Tried with older driver? Try uninstalling drivers with DDU and do it in safe mode (you can set safe mode in DDU's settings)

[GarnetG]

Y dont u put a sli cable in? Might solve your problem? 

[Mick Naughty]

Shouldn’t effect the computer what so ever having sli on or not. Or having the bridge connected. 

 

Running 2 or 12 cards, shouldn’t be any stuttering. 

 

Had this issue once or twice. Bad install of windows. Or something got corrupted. 

[RichardBao]

Hi, every boday. it's not about SLI bridge's problem. I HAVE UPDATE the inofo