My BIL has been trying to get his new PC working with his Charter cable for a couple days now. The cable company can see the modem just fine, and Vista says the (onboard) ethernet controller is ...

If the Windows Network Diagnostics report displays the message The connection between your access point, router, or cable modem and the Internet is broken after you run the Internet Connections ...

I've have cable modem service for over a year now. I've never had problems before recently. Several changes have happened to my setup, so it's hard to pinpoint where the problem is coming from.