If Realtek PCIe GBE Family Controller failure is what you are dealing with and the driver is not working in Windows 11/10, follow the solutions mentioned below. The Secure Boot protects your ...
This showed that the Raspberry Pi would happily talk with a VL805-based USB 3.0 PCIe expansion card, as well as a Realtek RTL8111-based Ethernet card, but not a number of other PCIe cards.