cant connect to internet

i have a hp slimeline s3300f running windows vista that was able to go online up to a day ago....nothing has change no removal or addition of any programs ...at the bottom of the taskbar i have a little screen with a red x through it..when i try to run the diagnose but get two messages 1.The network adapter "NVIDIA nForce Networking Controller" is experiencing driver or hardware related issues and 2. Make sure your Internet Protocol Bindings are correct Ensure that "Internet Protocol Version 4 (TCP/IPv4) and "Internet PRotocol Version 6 (TCP/IPv6)" are selected in the configuration for the network adapter "Local Area Connection ". also under device manager i have an exclamation point over microsoft 6 to 4 adapter.....tried uninstalling and reinstalling microsoft 6 to 4 adapter but all is still the same, cant go online.....?????????????

 

Have you tried to download the driver again?

http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?lc=en&dlc=en&cc=sg&lang=en&product=3644716&#

 

yes downloaded the driver again still the same problem...wierd thing i just noticed in the bottom right i have a monitor icon with an x through it, but its not the lan icon but yet the wireless one, this computer is not set up wirelessly, all in all still cant connect i have checked all obvious( cables, drivers) and still no internet....very baffling