After a power outage, a user experienced no internet access despite the ADSL and internet lights being on. Initial troubleshooting steps included unplugging the router and using the "Troubleshoot/Repair" option, but these did not resolve the issue. Suggestions included checking the router's configuration, specifically the PPPoE connection settings, and examining the router's logs and status. The user confirmed the connection type was PPPoA and reported the same issue over both wired and Wi-Fi connections. Further advice included running command line diagnostics (ipconfig, ping, nslookup) and considering a factory reset of the router to resolve potential configuration issues. The discussion highlighted the importance of checking for ISP-related problems if multiple devices are affected. Summary generated by the language model.