Since installing Windows 7, I could not use the internet. apparently have problems with the LAN connection. I have tried all means try but nothing has happened.

Hi Manfo, To be able to assist you better, can you please elaborate on - Are you connecting at home network or work network? Are you connecting physically to the LAN or via WiFi? Are you aware if the network you are using requires a static IP (i.e. a predefined address) or dymanic (i.e. an address system obtains on its own when connecting to the network? Are you behind a firewall, if yes, which firewall are you using? Also can you elborate on the steps you have taken to connect and what error do you recieve? It will be easier to find the exact cause of issue, as soon as you provide above information. Looking forward to assist. Kindest regards Rick Satsan-Stellar B.A., Ad. Dip (IT Network Security), Dip (IT Tech Support), MCSE, MCSA, MCP, CCNA, A+ Uniting Technology, Learning & Community E: ricarrdino@live.com