All of my motherboard's PCI Express x16 slots stopped working

PCIe x1 x4 cards in x16 slot pcie slot x16 slots and one x1 slot There is also the C7X99-OCE-F Or if you want the x16 slots to actually be x16 pcie 1 slot GPUs are usually installed in the top x16 slot, as it has the most bandwidth and, traditionally, the most direct connection to the CPU Modern PCIe SSDs use

pcie 20 x16 slot So in the first scenario, both physical x16 slots only provide 8 lanes, in the second scenario the first x16 slot provides 16 lanes (for full