This article explains what to do if you have a strong wireless signal but no internet connection. This is probably a problem that you can fix yourself.
How to Fix WiFi Connected But No Internet Access Issue on Windows 10 – 5 Ways
If you have WiFi but no internet, follow these troubleshooting steps:
Reboot your router and modem. The first step in troubleshooting most technical issues, especially network hardware issues, is to reboot. Rebooting these devices clears their memory and resets any background or persistent issues.
Check that you are connected to the correct network. Make sure that your device is not trying to connect to a nearby network or a Wi-Fi repeater that is not fully set up. Both of these can have issues that are blocking your access. In these cases, you may still not have working internet even if Wi-Fi is enabled and connected.
