I have a Dell XPS 8300 (running Windows 7 Home Premium) that has lost Internet access. It was fine until yesterday. It shows that it's connected to my home wireless network, but cannot acces the Internet. All our other computers (desktops, laptops & iPad - all running different OS) are able to connect.
I checked the network card, using the Windows Device Manager, and it shows that it is "working properly" and that there are no conflicting devices. What should I do next?