Suddenly lost Internet connection

I have an HP EliteBook 6930p with windows 7 installed and everything was working fine until i did a recent windows upgrade (might just be a coincidence) and i suddenly lost internet connection. My laptop picks up the router, shows full strength but i cannot connect to the internet wireless or Ethernet cable. I restored to a previous date and it worked fine, and all my other devices work fine (iPad, iPhone, other laptops). The trouble is when i connected to the internet again it up dated windows and i cant restore back to the original date anymore as it has gone from the list.
Thinking i might have picked up a virus along the way.

Any help would be appreciated

 

Go to the Malware Forum and see what they say.