I have installed Windows 7 as dual boot with my existing XP, which I have connected through a Linksys WRT54G router to a modem for the internet. On XP, it is and has been working for a long time. However, on the new install of Windows 7, it advises that there is no cable connected to the NIC. I have tried the network troubleshooter with no luck, but being new to Windows 7, I don't know all of the in's and outs. This PC is connected via wire to the router, with a 2nd PC connected wirelessly.