The first thing to do is to ensure that your WiFi adapter is working in Device Manager.How to Fix: No WiFi After Windows 10 Upgrade With that said, I'll describe a systematic approach to resolving this issue below. The top two reasons are that the driver for your wireless network adapter needs to be updated, or it's possible that Windows 10 does not support your wireless adapter. There's a lot of reasons that the WiFi won't work after upgrading to Windows 10. How can I get my wireless network to work again? ' However, when I connect my laptop to my router using a ethernet cable, it works fine. After I upgraded to Windows 10, I can no longer connect to my wireless network.
