Why does my family have cats but my mobile phone's wlan can't receive signals?
Since the mobile phone can search, it means that the cat is OK. Can the computer search other wireless network signals? If it can, restart your cat. If it can't, first confirm that the computer wireless network is on, and then reinstall the network card to drive the upstairs device manager. This means that you right click "Computer" and select "Properties" After opening it, there is a device manager in it to check whether it is a network card driver problem