So I've got this really strange issue with my graphics card. Basically, it will work in the second PCIe slot on my board just fine (although it runs at x8 because that's the maximum speed of the slot in question), but it's not recognised at all in the first. I've tried 2 different motherboard and the problem persists. I've also just tried a second CPU to rule that out, and yet again the problem persists. To add to that, I also tried reseating several times, checking for dust in the slot, checking the gold contacts on the GPU, clearing CMOS, reseating the RAM in different slots, and loosening the CPU cooler to make sure the board isn't warping... and none of that worked. Has anyone ever seen a GPU behave in this way before? Any advice?