I recently bought a second GTX 770 to SLI with the one I currently have, but for some reason it's just not working. By "not working" I mean that my computer isn't even detecting whatever card is the additional one in the SLI setup; only the main GPU shows up in Device Manager, and the SLI-enabling option doesn't appear in the Nvidia Control Panel.
I've been troubleshooting and, so far, I've tested each card individually (both work just fine alone), I've double-checked my PSU sufficiency (I have a Corsair GS800, should be sufficient), I've made sure they're installed correctly, I've switched their slots on the motherboard (speaking of which, my motherboard, an ASUS P8Z77-V, does support SLI; I've run two 570's on it before), I've switched around the SLI bridge, and I've made sure that both the GPU's and my BIOS have been updated to their latest drivers. At this point, I've run myself dry when it comes to things to test. The only thing that has me slightly concerned is that while both of my GPU's are the same model (Gigabyte GV-N770OC-4GD), my original GPU's revision is 2.0 while the one I just bought is revision 1.0. I'm not sure if that'd cause this to happen, but I might as well put that out there.
I really want to get this working, so I'd greatly appreciate any help!
EDIT: After further testing, I discovered that my second PCI expansion slot has become defective. Issue solved, no need for assistance.
I've been troubleshooting and, so far, I've tested each card individually (both work just fine alone), I've double-checked my PSU sufficiency (I have a Corsair GS800, should be sufficient), I've made sure they're installed correctly, I've switched their slots on the motherboard (speaking of which, my motherboard, an ASUS P8Z77-V, does support SLI; I've run two 570's on it before), I've switched around the SLI bridge, and I've made sure that both the GPU's and my BIOS have been updated to their latest drivers. At this point, I've run myself dry when it comes to things to test. The only thing that has me slightly concerned is that while both of my GPU's are the same model (Gigabyte GV-N770OC-4GD), my original GPU's revision is 2.0 while the one I just bought is revision 1.0. I'm not sure if that'd cause this to happen, but I might as well put that out there.
I really want to get this working, so I'd greatly appreciate any help!
EDIT: After further testing, I discovered that my second PCI expansion slot has become defective. Issue solved, no need for assistance.
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