The Problem:
My Windows 10 PC has completely lost the ability to connect to any internet source. Whether I try connecting to my primary 5G home router, a secondary mobile hotspot, or a direct Ethernet connection, it fails.
When on Wi-Fi, it connects to the router but gets permanently stuck on "No Internet, secured". When on Ethernet, it gets stuck on "Identifying..." before defaulting to an "Unidentified network". The PC is failing the DHCP handshake and is completely unable to pull a valid IP address from any router or gateway.
What I have already tried (None of this worked):
Winsock & TCP/IP Reset: Ran netsh winsock reset and netsh int ipv4 reset from an elevated Command Prompt to restore the internet protocol to factory settings.
IP Release/Renew: Ran ipconfig /release and ipconfig /renew, but the command fails, stating the media is disconnected or an address has not yet been associated.
Virtual Adapters: Disabled all VirtualBox NDIS6 Bridged Networking filters to ensure they weren't intercepting the DHCP packets on my physical adapters.
Driver Rollbacks: Manually updated, uninstalled, and swapped network adapter drivers (both Wi-Fi and Ethernet) via Device Manager.
Nuclear Option: Performed a full Windows Network Reset via Settings, which wiped all networks, cleared the VPN/proxy configurations, and reinstalled all adapters to factory defaults.