Windows "No Internet": Reset the Network Stack (ipconfig, netsh)
Fix Windows no-internet and DNS problems: find the broken layer, flush DNS, reset Winsock and TCP/IP, check proxy and drivers.
Tag: dns
DNS Troubleshooting Guide: dig, nslookup and Common Problems
Diagnose DNS issues with dig, nslookup and Resolve-DnsName: record types, status codes, TTL, flushing caches and the usual causes.