WiFi Adapter Not Working? 8 Common Problems and Easy Fixes If your WiFi adapter suddenly stops working, you are not alone. Sometimes it shows a yellow exclamation mark in Device Manager. Sometimes the connection drops during calls or downloads. In other cases, Windows simply cannot find any network. For individual users it is annoying. […]
A3: Move the network card away from interference sources and obstacles. Wipe USB interface and network card surface with a dry cloth to remove dust. Update network card driver and router firmware. Disconnect unnecessary devices connected to the router to free up bandwidth.