we need more details on the network configuration, e.g. what device is your computer plugged into (cable/DSL modem? model number would be very good).
A coax cable from AT&T U-verse screws into to the 2Wire 3800HGV-B Gateway router. Ethernet cable they provided connects from a LOCAL ETHERNET port
on the gateway to my computer’s Ethernet port. Advanced configurations are shown here. http://192.168.1.254/.
It can not obtain an IP address from teh DHCP server.
Did you ever get a solution to your problem or did you restore the system? I have exactly the same error with my Dell Optiplex 960.
have you tried to ping 127.0.0.1? to check if you're tcp/ip stack is working properly, what if you set static ip on your network connection, same problem?
New development here: By trial and error I have found out that the connection works when set to 10mbit full duplex. It is VERY slow though. Far slower than 10mbit.
When set to auto negotiate speed (=100mbit) then it fails. I have tried with both DHCP and static address. The ping fails.
Hope someone has heard of these symptoms.
looks like it's more on the physical layer since when you manually set to 10mbps, it works. have you feed this back to your ISP? they might change something on their end that affects your connection since it has been working for 6 months...
or if you have spare network adapter, you can try using it to further isolate the problem
Yep 10mbit full duplex works. No other setting will work. Sooooo slow... what a pain.
I'm having this exact same issue with a brand new dc7900 as well. Only setting link speed to 10/full gets me connected. But it is dog slow.
I've tried drivers from Intel site and HP site. My net ops folks have double checked the port I am connected to is set to 100/full.
One caveat though; I am running Windows Server (Enterprise) 2008 R2.
I can only tell my experience: I reported it to Dell and they came out and changed the motherboard! After that it worked perfectly. Seemed to be a hardware problem or maybe some firmware got changed with the board. Cannot say if at all related to your problem.