I am getting the "limited or no connectivity" message on a desktop connected (wired) to a dsl modem and router. I have tried a new network card, put the card in another slot. installed new drivers, and tried the usb connection. I have flashed the bios also. The trick is I have two laptops connecting to the router wirelessly with no problems. I have went through the check list at "PChell" and nothing has worked. I can connect to a couple web sites and then I lose connectivity. I can restart pc and same issue. I have changed patch cables as well. The problem is obviously on the desktop pc, but I am out of ideas.