SLI Issues

[SimonWhite]

I have a PC with a single GTX 970. I bought another GTA 970 for SLI, my CPU, PSU and Motherboard are compatible, i7 4790k, 1000W 80+ platinum, gigabyte z97x ud3h. I plugged in the cards to the x16 slot and x8 slot and plugged in the bridge. Drivers detect both cards, but won't let me turn on SLI because they don't see the bridge. Then I shut down and tried another bridge, because one came with motherboard, one came with new graphics card. Same thing. I then tried the other SLI bridge pluging thingy, nope, then I ran Display Driver Uninstaller and reinstalled my drivers. Same thing. I'm out of ideas, how can I get SLI working?

 

Nvidia Control Panel shows both cards, but will not let me enable SLI, it says: "To maximize 3D performance, connect the SLI-ready graphics cards with an SLI connector." But the bridge is plugged in. And I've tried more than one in each space on the cards.

[Oshino Shinobu]

Have you tried swapping the cards round? So the one that's in the top slot now is in the bottom. Try updating motherboard BIOS as well. Any visible damage on the SLI connectors or bridges? 

[Dzzope]

Yup... Sounds like you either have 2 dud bridges or a card with a  fault.

[SimonWhite]

Have you tried swapping the cards round? So the one that's in the top slot now is in the bottom. Try updating motherboard BIOS as well. Any visible damage on the SLI connectors or bridges? 

 

I have not tried swapping the cards around. Mobo is on latest BIOS.

 

I'm talking the Nvidia Live chat now, but I doubt that will help. There is no damage to any either of the cards as far as I can tell, and both work great solo.

 

Both bridges where sealed still when I pulled them out...

 

I guess I'll try swapping them and resetting CMOS? That's all I can think of.

 

E: http://i.imgur.com/rrnvU7X.png