I have an MSI x399 SLI plus motherboard that is having weird problems with graphics. It will not post with some GPUs. I have tested it with a gt 1030, gtx 1080 and a gtx 750, all known good gpus and it will only boot with the 750. I have tested the same GPU and GPU with a different board and it boots fine. I have tried resetting the bios, reflashing the bios, flashing an older bios and that didn’t seem to do anything. I was able to get it to boot once with the 1030 after changing some bios settings but after a reboot it stopped working again. I don’t know of much else to try at this point. Does anybody have any tips or suggestions for troubleshooting?
Is CSM disabled, disable it if it’s not
If ^this doesn’t help, try different slots.
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