https://wintechlab.com/fix-unidentified-network-no-internet-access/
Flush DNS and Reset TCP/IP
Flush DNS cache and Reset TCP/IP configuration to defaults setting is very helpful to fix most of network and internet problems. To do this open Command Prompt with Admin privilege.
Here on command prompt type the following command and hit enter after each command:
- ipconfig /release
- ipconfig /flushdns
- ipconfig /renew
- netsh winsock
- nbtstat –r
- netsh int ip reset
Restart your computer. Normally it should work by now. After flushing DNS you will see that No Internet Connection issue gets fixes and you can now enjoy your internet connection.