T500 Ethernet Connection Not working, but wireless is working

Question

Hi
In my laptop, when I try to connect to internet using the Ethernet card, it is not working.
My laptop has the following configuration.
T500; Windows Vista 64
Ethernet card: Intel(R) 82567LM Gigabit Network Connection
Following are what I observed.
1. From command prompt, when I executed the command ipconfig, it is not listing the ethernet adapter connection.
C:\Windows\system32>ipconfig /all
Windows IP Configuration
   Host Name . . . . . . . . . . . . : Palasseri-Mana
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
Wireless LAN adapter Wireless Network Connection 3:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : My WiFi PAN
   Physical Address. . . . . . . . . : 00-21-6A-1A-24-B3
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wireless Network Connection 2:
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : WiFi STA
   Physical Address. . . . . . . . . : 00-21-6A-1A-24-B2
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::42a:c2e2:cf9f:7b87%13(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.12(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Sunday, February 21, 2010 6:12:15 PM
   Lease Expires . . . . . . . . . . : Sunday, February 28, 2010 6:12:14 PM
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 234889578
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-11-88-93-46-00-24-7E-13-AE-17
   DNS Servers . . . . . . . . . . . : 192.168.0.1
   NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 6:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : isatap.{7DB78E75-7547-408D-97D2-C347AF27F
5F9}
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 11:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : isatap.{5D3FE014-FD4D-40E1-AB3A-94B48F4A9
392}
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 14:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 02-00-54-55-4E-01
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
2. Control Panel\Network and Internet\Network Connections : Under this, when I list all the connection, the Ethernet connection is showing it as Enable.
3. When I unplug the network cable, at Control Panel\Network and Internet\Network Connections, I see the status as Cable Unplugged..
4. I downloaded the latest driver and installed, but didnt change this behavior.
How can I fix this ethernet issue. Any help is deeply appreciated.
Thanks,
NP

Answer 1

palasseri wrote:
Thank you for your reply.
Yeah, it is listed under the Device Manager.
I see one potential error under the event viewer. Thank you for that pointer.
The IP address lease 192.168.0.11 for the Network Card with network address 00216A1A24B2 has been denied by the DHCP server 192.168.0.1 (The DHCP Server sent a DHCPNACK message).
Any idea why this is coming???
I get that exact same error when I change my MAC address and my computer is trying to connect to my router.
This message is probably just the result of your computer not recognizing your Ethernet Adapter.
I have never had this problem and am just shooting in the dark, but I would say you either have a bad Ethernet card, or your Adapter is not configured correctly.
I keep wanting to go back to your adapter in the Device Manager.
Is the Device Status "This Device is working Properly"?
Under Power Management, is the "Allow the computer to turn off this device to save power" unchecked?
Are you downloading the drivers from Lenovo's website?
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-70199
Have your tried Uninstalling the adapter, and reboot.
Your system may automatically reinstall the adapter.  If not, you can manually reinstall it.
T500 ~ T9400 2.53GHz 1066MHz 6MBL2 ~ Vista 32bit Home ~ WXGA 15.4 LED ~ ATI Mobility Radeon 3650 ~ 4GB ram ~ Camera ~ 160GB 7200rpm HD ~ Intel Turbo Memory 2GB ~ CD-RW/DVD ~ Intel WiFi 5300