I've checked the forum for this issue. Not sure I found the answer. This problem occurs occassionally. I lose internet connectivity. The network shows an unplugged cable(not true). I've tried other cables no joy. THe local area connection is shown as down (realtek PCIe GBE family controller). Device manager says the card? is working. The ethernet port is not blinking when this happens. Winxp, motorola surfboard modem, netgear wireless router. Wireless works when this happens (at least yesterday). This has been happening for a long while. I thought it was my cable provider. Now i wonder if my controller is failing? It's working now after being off all night.