As best I can tell from your system info file, your ethernet adapter (Broadcom NetLink Gigabit Ethernet) is using an old driver. K57nd60a.sys version 22.214.171.124 dated 4/12/2010 which I suspect should be updated to version 126.96.36.199 dated 7/30/2010 give that a try and see if it helps at all. Broadcom.com - Ethernet NIC NetLink Driver Downloads The other thing that TG was talking about is manually setting the speed and duplex to something other than autonegotiation which you may still need to do, since some gig cards for some reasons can't autonegotiate with some switch ports on some routers. So... Type ncpa.cpl into the search box and hit enter select then right click on your ethernet adapter and choose properties click the configure button near the top right of the properties dialog box select the advanced tab and look for something called speed and duplex, may say something like link speed and or duplex mode anyway select that in the left column and then in the right column hit the drop down and choose 100 half OK your way back out of there and reboot. 100 half is just a fall back speed and duplex, your network may very well support 100 full or 1000 half or full, it just might not be able to autonegotiate so setting it manually often helps. So start with 100 half and then if you would like experiment with other settings.