Try setting the Windows to obtain an IP address automatically. The steps are: If this does not work, we may have to refresh the Domain Name Server (DNS) to resolve this issue. Please try these steps: Let me know if this works. I will be glad to help you further.
I have two Dell computers: one Dell Studio XPS 8100 and one Dell XPS L702 laptop. In my system I have internet that goes through a router. My Studio XPS is wired internet connection while my laptop is on wifi. Recently, for no apparent reason (it started on Sunday), I have no internet connection on my Studio XPS tower. Wifi works fine on the laptop. I have also tried wiring my laptop in to the router and it recognises the LAN connection and I can get internet connection. So I know the LAN and the router and cables are working fine. But still I have no internet connection any more on my Studio XPS. Any suggestions what the problem and solution might be? I have tried resetting the TCP/IP stack and Winsock: > netsh int ip reset > netsh winsock reset Still nothing. I ran an IPCONFIG /ALL and here are the results: C:\Windows\system32>IPCONFIG /ALLWindows IP Configuration   Host Name . . . . . . . . . . . . : computer-PC   Primary Dns Suffix  . . . . . . . :   Node Type . . . . . . . . . . . . : Hybrid   IP Routing Enabled. . . . . . . . : No   WINS Proxy Enabled. . . . . . . . : NoEthernet adapter Local Area Connection:   Connection-specific DNS Suffix  . :   Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet   Physical Address. . . . . . . . . : 84-2B-2B-AE-57-DC   DHCP Enabled. . . . . . . . . . . : Yes   Autoconfiguration Enabled . . . . : Yes   Link-local IPv6 Address . . . . . : fe80::28f3:f3b2:2d05:c51d%10(Preferred)   IPv4 Address. . . . . . . . . . . : 192.168.0.101(Preferred)   Subnet Mask . . . . . . . . . . . : 255.255.255.0   Lease Obtained. . . . . . . . . . : 09 October 2012 10:05:45   Lease Expires . . . . . . . . . . : 16 October 2012 10:05:44   Default Gateway . . . . . . . . . : 192.168.0.1   DHCP Server . . . . . . . . . . . : 192.168.0.1   DHCPv6 IAID . . . . . . . . . . . : 243542827   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-70-E1-0F-84-2B-2B-AE-57-DC   DNS Servers . . . . . . . . . . . : 192.168.0.1   NetBIOS over Tcpip. . . . . . . . : EnabledTunnel adapter isatap.{D0B170F0-8AE4-4878-9D82-817FD57F01E3}:   Media State . . . . . . . . . . . : Media disconnected   Connection-specific DNS Suffix  . :   Description . . . . . . . . . . . : Microsoft ISATAP Adapter   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0   DHCP Enabled. . . . . . . . . . . : No   Autoconfiguration Enabled . . . . : YesTunnel adapter Local Area Connection* 9:   Media State . . . . . . . . . . . : Media disconnected   Connection-specific DNS Suffix  . :   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0   DHCP Enabled. . . . . . . . . . . : No   Autoconfiguration Enabled . . . . : YesTunnel adapter 6TO4 Adapter:   Media State . . . . . . . . . . . : Media disconnected   Connection-specific DNS Suffix  . :   Description . . . . . . . . . . . : Microsoft 6to4 Adapter   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0   DHCP Enabled. . . . . . . . . . . : No   Autoconfiguration Enabled . . . . : Yes I am at a loss as to why only the hardwire internet connection to my Studio XPS is failing, yet there is clearly still an internet connection that allows me to connect my laptop  via both wired and wifi connection. Any help much appreciated.
No internet connection: got wifi but no LAN mystery