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sli not working

aaws
By aaws
in Graphics Cards
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ok so i installed a 2nd gtx 1070 in to my system so when i go to the nvida control panel under 3d settings it does not show me any sli option and when i check device manager it does not show me 2 cards but only 1 gtx 1070

in gpu-z my one of my gtx 1070's are running 8x mode so both of them are probably running in 8x mode can someone help meh 

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How did the "installing second GPU" look like? Try reinstalling GPU drivers if you haven't done that. I will ask just in case but you are using an SLI bridge, right?

CPU: i7 6950X  |  Motherboard: Asus Rampage V ed. 10  |  RAM: 32 GB Corsair Dominator Platinum Special Edition 3200 MHz (CL14)  |  GPUs: 2x Asus GTX 1080ti SLI 

Storage: Samsung 960 EVO 1 TB M.2 NVME  |  PSU: In Win SIV 1065W 

Cooling: Custom LC 2 x 360mm EK Radiators | EK D5 Pump | EK 250 Reservoir | EK RVE10 Monoblock | EK GPU Blocks & Backplates | Alphacool Fittings & Connectors | Alphacool Glass Tubing

Case: In Win Tou 2.0  |  Display: Alienware AW3418DW  |  Sound: Woo Audio WA8 Eclipse + Focal Utopia Headphones

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1 minute ago, Lathlaer said:

How did the "installing second GPU" look like? Try reinstalling GPU drivers if you haven't done that. I will ask just in case but you are using an SLI bridge, right?

i am using a 2 way sli bridge it went fine no problems i already reinstalled the drivers

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Next step would be to check different PCIE slots on the board, one can be dead. Assuming both GPU's work ofc.

CPU: i7 6950X  |  Motherboard: Asus Rampage V ed. 10  |  RAM: 32 GB Corsair Dominator Platinum Special Edition 3200 MHz (CL14)  |  GPUs: 2x Asus GTX 1080ti SLI 

Storage: Samsung 960 EVO 1 TB M.2 NVME  |  PSU: In Win SIV 1065W 

Cooling: Custom LC 2 x 360mm EK Radiators | EK D5 Pump | EK 250 Reservoir | EK RVE10 Monoblock | EK GPU Blocks & Backplates | Alphacool Fittings & Connectors | Alphacool Glass Tubing

Case: In Win Tou 2.0  |  Display: Alienware AW3418DW  |  Sound: Woo Audio WA8 Eclipse + Focal Utopia Headphones

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4 minutes ago, aaws said:

i tried with another slot the display was not working 

If you are sure that both GPU's are working (have you tried both of them on the same slot one after another?) and then you moved the working GPU to a different PCIE slot but lost the display then your mobo pcie slots are the problem.

CPU: i7 6950X  |  Motherboard: Asus Rampage V ed. 10  |  RAM: 32 GB Corsair Dominator Platinum Special Edition 3200 MHz (CL14)  |  GPUs: 2x Asus GTX 1080ti SLI 

Storage: Samsung 960 EVO 1 TB M.2 NVME  |  PSU: In Win SIV 1065W 

Cooling: Custom LC 2 x 360mm EK Radiators | EK D5 Pump | EK 250 Reservoir | EK RVE10 Monoblock | EK GPU Blocks & Backplates | Alphacool Fittings & Connectors | Alphacool Glass Tubing

Case: In Win Tou 2.0  |  Display: Alienware AW3418DW  |  Sound: Woo Audio WA8 Eclipse + Focal Utopia Headphones

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4 minutes ago, Lathlaer said:

If you are sure that both GPU's are working (have you tried both of them on the same slot one after another?) and then you moved the working GPU to a different PCIE slot but lost the display then your mobo pcie slots are the problem.

yep both are working but when i plug in my dp1.4 cable in to the 2nd slot card the display loses signal 

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Did you try what @WereCat said? Remove both Gpus, plug only one to top pcie slot and see if it sees your card. If yes then turn off the pc, remove the Gpu and put it into lower slot. And repeat. Report if all pcie slots have been tested.

 

Also, what motherboard do you have?

CPU: i7 6950X  |  Motherboard: Asus Rampage V ed. 10  |  RAM: 32 GB Corsair Dominator Platinum Special Edition 3200 MHz (CL14)  |  GPUs: 2x Asus GTX 1080ti SLI 

Storage: Samsung 960 EVO 1 TB M.2 NVME  |  PSU: In Win SIV 1065W 

Cooling: Custom LC 2 x 360mm EK Radiators | EK D5 Pump | EK 250 Reservoir | EK RVE10 Monoblock | EK GPU Blocks & Backplates | Alphacool Fittings & Connectors | Alphacool Glass Tubing

Case: In Win Tou 2.0  |  Display: Alienware AW3418DW  |  Sound: Woo Audio WA8 Eclipse + Focal Utopia Headphones

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What's your CPU? Are you using any M.2 SSD's or have any other PCI-E cards installed?

 

Gaming Rig
Spoiler

CPU: Intel i7-6850k @ 4.2GHz

GPU: 2x FE GTX 1080Ti

Memory: 16GB PNY Anarchy DDR4 3200MHz

Motherboard: ASRock X99 Extreme 4

 

Encoding Rig
Spoiler

CPU: Ryzen 7 1700 @ 3.7GHz

GPU: GTX 1050

Memory: 8GB Curcial Ballistix DDR4 2133MHz

Motherboard: Gigabyte AB350M-DS3H

 

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