pc cant connect to network

ok, so i put my faith in a dlink wlan card. The device was working properly but just recently i couldnt establish a connection, so i tried updating other drivers for lan and wlan adapters but nothing seems to work. I have tried running ipconfig but i keep getting the media dissconneted error. Also reseting ip adress in cmd wont work. Im trying to connect a bigpond modem router on a desktop pc running windows 7 pro x64. Any help would be appreciated.

 

Maybe this can Help.

Check the Device Manager for valid Wireless card entry.

http://www.ezlan.net/Win7/net_dm.jpg

If there is No valid entry, delete any Bogus Entry, and re-install the Wireless card's Drivers.

Check the Network connections to make sure that you have a Wireless Network Connection Icon/Entry, and that the Properties of the Icon (right click on the Icon) are correctly configured with TCP/IPv4 protocol in the Network Connections Properties.

http://www.ezlan.net/Win7/net_connection_tcp.jpg

Make sure that if there is a vendor's Wireless Utility the utility is Not Running together with the Windows native Wireless utility.

Make sure that No Firewall is preventing/blocking the Wireless components to get to the Network.

If everything above is OK and it is not connecting to the Wireless router. Log from any computer that is, or can be connected to Wireless Router with a Wire, disable the Wireless Security, make sure that the Wireless broadcast is On, and try to connect with No Wireless security.

When working turn On the Wireless security.

Note* People sometimes make mistakes in writing and retyping the security passphrase.

Alternative way is to copy it from the Router's menu, and then paste when asked by the Wireless card.