Question Gigabyte H310M S2P with NVIDIA GeForce 670

[fmagic]

CPU - Intel Core i5-8400 (6 cores, 2.8GHz)
Motherboard - Gigabyte H310M S2P, revision 1.0
Power Supply - Ultra X4 600 watts (modular)
RAM - 2 x 8GB (Crucial Ballistix Sport AT)
GPU - EVGA GeForce GTX 760 (PCIe 3.0 x16) - the power supply has the right PCI-E adapters to connect to the GPU
Application - Zwift, and I have tried Unigine (Valley and Heaven) to benchmark performance

I am in the process of upgrading an old system and thought I found the perfect budget solution to get better performance out of the one application I use heavily, Zwift. The Gigabyte motherboard does have an Intel HD Graphics 630 built-in, but I have an EVGA GeForce GTX 760 that I wanted to try using with this system because I got good performance with it on my old system. The motherboard and card specs both match (PCI-E 3.0, x16), but I cannot get the motherboard to recognize the card at all. I have tried enabling CSM in the BIOS, and followed the GIGABYTE pinned thread steps including loading optimized defaults, and even upgrading the BIOS from A11 to A12, and there has been no change in the behavior. The card simply does not seem to be recognized at all no matter what I do. I put the card back in the old system, and it still works fine. I also had an old GeForce 210 laying around (PCI-E 2.0), and I tried it for the fun of it, and the motherboard does not seem to recognize this card either. I have tried with and without display connections to the GPU and the motherboard, and using the various display ports (VGA, HDMI, DVI, etc.) I have tried changing the BIOS setting that referred to "Other hardware" from UEFI to Legacy and that did not seem to help. The operating system is Windows 10, and I do not see a display adapter device in Device Manager.

With the on-board video (Intel HD Graphics 630), quality seems to be good, but I think it could be better (16-24 FPS in Unigine with 768P resolution. I never did run benchmarks in the old system, and I'm too far invested in the new system to move components back.

Any suggestions on how to get this GPU to be recognized by this motherboard?

 

[RememberThe5th]

Ive had that issue many times with my current build.
Countless of reboots, adding other card, removing, switching ram slots, video output and then out of nowhere it starts to being recognized.

I may suggest you to let it to boot up with intergrated graphics and with dedicated gpu then shutdown and plug monitor into your dedicated and start the pc up.

 

[fmagic]

As a follow up to this issue, I recently reseated the GPU and power cables and the system started recognizing it. It works great, but I am getting random crashes when I run in medium or high resolution (but not in low resolutions). I suspect my power supply does not have enough amperage for it, so I am waiting on a new power supply. I am upgrading to an 850W 80+ Gold, which should be a nice improvement on this ancient 600W supply.