I also have the exact same problem: "Warning PCIe - Training error PCI tag-0100 VendorID-1002 DeviceID-682B SVid-1028 SDid-06E0 Bus 01: Link Degraded, maxWidth x16, negWidth x8, Slot 1" Computer Model Dell Precision 3510, I have nearly two years now. Also my video card is not shown in the Device Manager of Windows 10.