Computerhilfen.com: problem with Network Adapter after connection to another network

Hi,

Recently i started using broadband internet (http://www.computerhilfen.com/explanation-i-Internet.html) connection (LAN). (http://www.computerhilfen.com/explanation-l-LAN.html) After that I cannot connect to WLAN. (http://www.computerhilfen.com/explanation-w-WLAN.html) I have checked the IP addresses and found to be fine. I am able to detect the WiFi, but not able to get connected. Kindly help in this issue. I checked the hardware (http://www.computerhilfen.com/explanation-h-Hardware.html) and there is a warning in Microsoft-6zu4-Adapter.. Thank you.

what kind of workstation (http://www.computerhilfen.com/explanation-w-Workstation.html) do you use? (laptop, (http://www.computerhilfen.com/explanation-l-Laptop.html) desktop (http://www.computerhilfen.com/explanation-d-Desktop.html) pc...) Have you already checked the driver (http://www.computerhilfen.com/explanation-d-Driver.html) software (http://www.computerhilfen.com/explanation-s-Software.html) of you're WLAN (http://www.computerhilfen.com/explanation-w-WLAN.html) Adapter? (http://www.computerhilfen.com/explanation-a-Adapter.html)