Cant Enable SLI

[darkness108]

I recently purchased a 2nd msi gtx 970 for my system, and am just now having issues. Earlier today, i tried to go and re enable sli (formerly disabled because Rainbow Six doesnt support it) and it told me "To maximize 3D performance, connect the SLI-ready graphics cards with an SLI connector." This was the first time i have encountered the issue, and i did not change anything from before. All i did was take a break from playing to come back to this. I use a MSI sli connector, so i tried swapping it out with the standard one in the mobo, but it made no difference. Please help me enable SLI!

[pokechat8978]

I recently purchased a 2nd msi gtx 970 for my system, and am just now having issues. Earlier today, i tried to go and re enable sli (formerly disabled because Rainbow Six doesnt support it) and it told me "To maximize 3D performance, connect the SLI-ready graphics cards with an SLI connector." This was the first time i have encountered the issue, and i did not change anything from before. All i did was take a break from playing to come back to this. I use a MSI sli connector, so i tried swapping it out with the standard one in the mobo, but it made no difference. Please help me enable SLI!

Does your motherboard support SLI?

[Nena Trinity]

What motherboard?

[Godlygamer23]

Was SLI enabled before?

[DildorTheDecent]

(formerly disabled because Rainbow Six doesnt support it) 

Was SLI enabled before?

godly pls. 

 

@darkness108 make sure that the bridge is fully slid on the connector. Also make sure when changing the SLi cable that the system is switched off. 

[Godlygamer23]

For future reference, disabling SLI is not necessarily required - you can create profiles that allow the game to run on only one card.

[darkness108]

My motherboard is a MSI z87-g45, which does support SLI. Also, i am 10000000000% sure the SLI bridge is 100% on the connector, and yes it was enabled before, and had no issues enabling/disabling. 

[darkness108]

@DildorTheDecent um............already have done that multiple times with the system on D: 

[Godlygamer23]

@DildorTheDecent um............already have done that multiple times with the system on D: 

Have you reinstalled your drivers?

[darkness108]

@Godlygamer23 no, i have not uninstalled and reinstalled, however i did update them via GeForce Experience. Could i have possibly caused damage by unplugging the SLI Bridge? (SLI had already stopped working prior to the removal of any bridges while the system was on)

[darkness108]

@Godlygamer23 ok, i just sold my 2nd monitor to a good friend of mine, and after checking nvidia control panel one last time before i was going to re seat my cards, i noticed that the option to enable Sli was back. This just came back after i took off the 2nd monitor, but this confuses me. I have had the monitor hooked up before and i was able to sli just fine....

[Godlygamer23]

@Godlygamer23 ok, i just sold my 2nd monitor to a good friend of mine, and after checking nvidia control panel one last time before i was going to re seat my cards, i noticed that the option to enable Sli was back. This just came back after i took off the 2nd monitor, but this confuses me. I have had the monitor hooked up before and i was able to sli just fine....

Was the monitor connected to the other card?

[darkness108]

@Godlygamer23 no, they were both connected to the same card. I am currently using the SLI bridge that came with the motherboard, and im scared to switch to my MSI one because i dont want it to stop working... but it matches the rig.

[Godlygamer23]

@Godlygamer23 no, they were both connected to the same card. I am currently using the SLI bridge that came with the motherboard, and im scared to switch to my MSI one because i dont want it to stop working... but it matches the rig.

If you want to use the bridge, I guess you'll have to try. I'm interested to know why the display was preventing it.

[Drez]

@Godlygamer23 ok, i just sold my 2nd monitor to a good friend of mine, and after checking nvidia control panel one last time before i was going to re seat my cards, i noticed that the option to enable Sli was back. This just came back after i took off the 2nd monitor, but this confuses me. I have had the monitor hooked up before and i was able to sli just fine....

 

I had this exact same problem as you (except I kept my 2nd monitor).  Here is a slew of options I went through that was caused by different things:

 

I replaced a 6+2 pin VGA cable that was faulty (this fixed the SLI option for me).  This was the problem when my 2nd card wasn't detected in BIOS.

 

Set the refresh rate for both monitors under the Windows Display Settings>Advanced Display Settings>Display Adapter Properties>Monitor>Screen Refresh Rate.  This fixed it for me when I got a new monitor and Nvidia control panel wouldn't let me enable SLI.

 

I also replaced my displayport cable and SLI bridge.

 

Hope one of these will help.

[darkness108]

@Drez thank you man, im buying a new monitor very soon (Acer G25zHU smidpx 25inch WQHD), so if it happens again i will try those. Did your graphics card not detect right off the bat, or did it happen after a while? My issue didnt happen right away, which made it confusing. 

 

[Drez]

@Drez thank you man, im buying a new monitor very soon (Acer G25zHU smidpx 25inch WQHD), so if it happens again i will try those. Did your graphics card not detect right off the bat, or did it happen after a while? My issue didnt happen right away, which made it confusing.

Mine worked fine out of the box. Second day I had it, the 2nd gpu was being detected off and on. That kind of lead me down the paths described. Then I got a new monitor with my new rig a month later and started having the problems with SLI not enabling in the nvidia control panel.