Hi,

1.      What exactly happen when you try to connect wireless network adapter?

2.      Do you receive any error message?

I would suggest you follow the methods and check.

Method 01:

Update drivers: recommended links**http://windows.microsoft.com/en-US/windows7/Update-drivers-recommended-links**

Method 02:

I would also suggest you to follow the links and check.

Setting up a wireless network

http://windows.microsoft.com/en-US/windows7/Setting-up-a-wireless-network

Start here to set up a home network in Windows 7

http://windows.microsoft.com/en-US/windows7/start-here-to-set-up-a-home-network-in-windows-7

Set up a wireless router

http://windows.microsoft.com/en-US/windows7/set-up-a-wireless-router