Fix network connection issues in Windows - Microsoft Support

Try these things to troubleshoot network connection issues in Windows 10.

Use the Network troubleshooter. Select Start > Settings > Network & Internet > Status. Under Change your network settings, select Network troubleshooter. Open Status settings
Make sure Wi-Fi is on. Select Start > Settings > Network & Internet > Wi-Fi. Next, select Show available networks, and if a network you expect to see appears in the list, select it, then select Connect. Open Wi-Fi settings
See if you can use the Wi-Fi to get to websites from a different device. If you can’t, restart your modem, router, and device, and re-connect to the Wi-Fi.
If your Surface still isn’t connecting, try the steps on Surface can’t find my wireless network.