My laptop was already connected to the my router before .. but i changed my router ... The laptop is not connecting wirelessly to router . Always shows message "can't connect to this network"
I tried all your steps in another question .. and still the same not connecting
It's connecting only by usb cable .
My laptop is DELL
Have you tried using the windows "troubleshoot problems"? It could be many issues but windows usually does a good job at fixing issues like this. You can access it by right clicking the wifi icon in the toolbar and click troubleshoot problems. It might be an IP issue or a simple reset of the wifi adapter might do the trick.