I got a Raspberry, I can switch it on, everything works, but as soon as I connect to the Wi-Fi, it also shows a connection, 1.) the Wi-Fi on my laptop no longer works, which I can't explain at all. 2) I can't use wlan on the Raspberry?
What's going on there? What can I change there
Is ex maybe an IP address conflict?
To avoid this, you could configure your network so that all clients get their IP via DHCP.