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 system ...
My main PC is a Zen3 board with a 2.5GBit Realtek NIC built in. When I built the system I put a 1GBit Intel NIC in it due to previous bad experiences with Realtek cards, and that card was rock solid ...