Restricted Connectivity

Since last week, my Internet connection to my wireless router Linksys no more connects ! Currently, I can only go on the Internet when I use the notebook directly on the router connect!?
Use Vista
Error details: When I use the laptop connecting to the router, it says that system connection is not successful .
What is the reason?

How do you connect?

Third-party software or Windows?

I use Windows

So nothing

What exactly do you use the router?

Has something changed on the router?

Which Lan card?

Prompt-> ipconfig

The issue here, please post