WLAN suddenly stops working - what can it be?

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My Wi-Fi on my laptop suddenly stopped working suddenly. If I click on the small arrow pointing up at the bottom left and then click on the network symbol, then my Easy Box with serial number is usually always there, but when I go there now, there are only no networks available. I'm now online via LAN cable, but can someone maybe tell me what exactly could have happened there and how I can surf via WLAN where? Would be pretty grateful because with cables is not that great…

Oa

Search for your Wi-Fi and integrate it again.

My

Uninstall all drivers for the network, restart the computer.

Si

Look for the network adapter in the Device Manager