Mensagem original de: Louise ,
A temporary fix to solve this is to open a command prompt - search for cmd.exe and when it is open, type in.... ipconfig /renew and then press return. It renews the ip address from the router for a while and gets it working assuming its not a hardware issue. If you lose it again, do it again. Someone more technical than me my be able to find a more permanent solution but at least this can get you up and running quickly.