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2 Bronze

LAN connection says unidentified network.

I have a DELL LATITUDE E6420, with while INTEL(R) 82579LM Gigabit Network Connection Network Adapter. In device manager the device is said to be working properly. But while connecting to internet, the LAN always says unidentified network. . Giving a fixed IP to it displays the Multiple Gateway problem.

While the Wireless seems to be working properly while accessing the Internet.

Have been trying to figure out the problem..

help me with this..

Replies (5)
3 Argentum

Hi,

Please update the chipset and the LAN card drivers.

The link to download the drivers for Latitude E6420 is:

http://dell.to/Q4IAjb

  1. Choose the relevant Operating System and download the chipset and the LAN card drivers to the desktop.
  2. Double-Click the downloaded file and click “Run”.
  3. Follow the onscreen instructions and complete the installation.

Restart the computer for the changes to take effect.

If the issue persists, please perform the steps below.

  1. Press the “Windows + R” to launch the run window.
  2. Type “cmd” in the run window and press the Enter key.

In the command prompt window,

  1. Type “ipconfig /release” and press the Enter key.
  2. Type “ipconfig /flushdns” and press the Enter key.
  3. Type “ipconfig /renew” and press the Enter key.

Try connecting to the internet now and post back the results.

Thanks & Regards
Sudeep S
#iworkfordell

2 Bronze

Thank you for providing the steps.

I re-installed my Windows 7 in my DELL LATITUDE E6420 and installed all the drivers following the steps as defined in Dell Manual.

and followed the steps you recommended, still my LAN is not working while i'm able to connect to internet via Wireless adapter.

The following were the results i copied while running the commands recommended by you,

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>ipconfig /release

Windows IP Configuration

No operation can be performed on Wireless Network Connection while it has its media disconnected.

An error occurred while releasing interface Loopback Pseudo-Interface 1 :

The system cannot find the file specified.

C:\Windows\system32>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

C:\Windows\system32>ipconfig /renew

Windows IP Configuration

No operation can be performed on Wireless Network Connection while it has its media disconnected.

An error occurred while releasing interface Loopback Pseudo-Interface 1 : The system cannot find the file specified.

C:\Windows\system32>ipconfig /release

Windows IP Configuration

No operation can be performed on Bluetooth Network Connection while it has its media disconnected.

An error occurred while releasing interface Loopback Pseudo-Interface 1 : The system cannot find the file specified.

Wireless LAN adapter Wireless Network Connection:

  Connection-specific DNS Suffix  . :

  Link-local IPv6 Address . . . . . : fe80::7511:a3c1:c2d1:1961%14

  Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

  Connection-specific DNS Suffix  . :

  Link-local IPv6 Address . . . . . : fe80::1dd7:8ab4:4932:6576%13

  IPv4 Address. . . . . . . . . . . : 192.168.0.188

  Subnet Mask . . . . . . . . . . . : 255.255.255.0

  Default Gateway . . . . . . . . . : 192.168.0.54

Ethernet adapter Bluetooth Network Connection:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{642D3ED1-3C83-49BB-AC26-1AEF13331241}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{3A90A133-F1A9-401D-9E22-2F02DF4C00BF}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{04C1EB87-95DE-40FA-B4B7-DD18D1157F00}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

  Connection-specific DNS Suffix  . :

  IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:28f0:3692:3f57:ff67

  Link-local IPv6 Address . . . . . : fe80::28f0:3692:3f57:ff67%15

  Default Gateway . . . . . . . . . : ::

C:\Windows\system32>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

C:\Windows\system32>ipconfig /renew

Windows IP Configuration

No operation can be performed on Bluetooth Network Connection while it has its m

edia disconnected.

An error occurred while releasing interface Loopback Pseudo-Interface 1 : The sy

stem cannot find the file specified.

Wireless LAN adapter Wireless Network Connection:

  Connection-specific DNS Suffix  . :

  Link-local IPv6 Address . . . . . : fe80::7511:a3c1:c2d1:1961%14

  IPv4 Address. . . . . . . . . . . : 192.168.0.152

  Subnet Mask . . . . . . . . . . . : 255.255.255.0

  Default Gateway . . . . . . . . . : 192.168.0.54

Ethernet adapter Local Area Connection:

  Connection-specific DNS Suffix  . :

  Link-local IPv6 Address . . . . . : fe80::1dd7:8ab4:4932:6576%13

  IPv4 Address. . . . . . . . . . . : 192.168.0.188

  Subnet Mask . . . . . . . . . . . : 255.255.255.0

  Default Gateway . . . . . . . . . : 192.168.0.54

Ethernet adapter Bluetooth Network Connection:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{642D3ED1-3C83-49BB-AC26-1AEF13331241}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{3A90A133-F1A9-401D-9E22-2F02DF4C00BF}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{04C1EB87-95DE-40FA-B4B7-DD18D1157F00}:

  Media State . . . . . . . . . . . : Media disconnected

  Connection-specific DNS Suffix  . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

  Connection-specific DNS Suffix  . :

  IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:c56:e2e:3f57:ff67

  Link-local IPv6 Address . . . . . : fe80::c56:e2e:3f57:ff67%15

  Default Gateway . . . . . . . . . : ::

And,

When I Run Network Diagnostics for Connection,

The Test Result Shows;

- Connection test failed

In details it shows,

- This connection is configured to use a static IP Address

- No WINS server is available for this connection

- No DHCP server is available for this connection

- Ping Gateway 192.168.0.54; failed

- Ping DNS 202.70.64.5: failed

- Link Speed: 100 Mbps, The Link partner is not capable of higher speeds.

When I Run Cable Test,

It shows no problem in Cable connection

& When I Run Hardware test,

It shows all test result passed.


Also the Network Diagnostics cannot identify the problem....

8 Krypton

Rush33,

 

When you reinstalled the operating system, did you install the Desktop/Notebook system software and the chipset drivers first? If not, the rest of the drivers will fail to install. How to Download and Install Drivers in the Correct Order

Start with the Desktop/Notebook system software and the chipset drivers and follow the list.


If you still have problems, Can you run Finding System Information REMOVE YOUR PRODUCT ID and post the information back here.


 

Rick


#DellRockstar

Welcome to Dell Community!

#DellWorld 2012
#DellWorld 2015
#Dell EMC World 2016

#MicrosoftMVP - Windows Expert-Consumer April 1, 2012 to March 31, 2015

This is a Dell User Forum. I am a Dell user, just like you are.
2 Bronze

Dear Rick,

Thank You, for your time assisting me in troubleshooting the problem.

I Have the installation order manual for Dell Latitude and Precision Model Laptop series, and after re-installing the OS, i have installed the Drivers as per the process indicated in the manual.

Here is the result i got after running theFinding System Information.

Host Name:                 RUSH-PC
OS Name: Microsoft Windows 7 Professional
OS Version: 6.1.7601 Service Pack 1 Build 7601
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Workstation
OS Build Type: Multiprocessor Free
Registered Owner: Rush
Registered Organization:

Original Install Date: 9/13/2012, 11:55:15 AM
System Boot Time: 9/21/2012, 10:03:08 AM
System Manufacturer: Dell Inc.
System Model: Latitude E6420
System Type: X86-based PC
Processor(s): 1 Processor(s) Installed.
[01]: x64 Family 6 Model 42 Stepping 7 GenuineIntel ~2701 Mhz
BIOS Version: Dell Inc. A14, 7/11/2012
Windows Directory: C:\Windows
System Directory: C:\Windows\system32
Boot Device: \Device\HarddiskVolume3
System Locale: en-us;English (United States)
Input Locale: en-us;English (United States)
Time Zone: (UTC+05:45) Kathmandu
Total Physical Memory: 2,985 MB
Available Physical Memory: 1,546 MB
Virtual Memory: Max Size: 5,968 MB
Virtual Memory: Available: 4,292 MB
Virtual Memory: In Use: 1,676 MB
Page File Location(s): C:\pagefile.sys
Domain: WORKGROUP
Logon Server: \\RUSH-PC
Hotfix(s): 88 Hotfix(s) Installed.
[01]: 982861
[02]: KB971033
[03]: KB2425227
[04]: KB2479943
[05]: KB2484033
[06]: KB2488113
[07]: KB2491683
[08]: KB2492386
[09]: KB2502285
[10]: KB2503665
[11]: KB2505438
[12]: KB2506212
[13]: KB2506928
[14]: KB2507618
[15]: KB2509553
[16]: KB2510531
[17]: KB2511250
[18]: KB2511455
[19]: KB2515325
[20]: KB2522422
[21]: KB2529073
[22]: KB2532531
[23]: KB2533552
[24]: KB2536275
[25]: KB2536276
[26]: KB2541014
[27]: KB2544893
[28]: KB2545698
[29]: KB2547666
[30]: KB2552343
[31]: KB2560656
[32]: KB2563227
[33]: KB2564958
[34]: KB2567680
[35]: KB2570947
[36]: KB2579686
[37]: KB2584146
[38]: KB2585542
[39]: KB2604115
[40]: KB2619339
[41]: KB2620704
[42]: KB2620712
[43]: KB2621440
[44]: KB2631813
[45]: KB2633171
[46]: KB2633952
[47]: KB2640148
[48]: KB2644615
[49]: KB2647753
[50]: KB2653956
[51]: KB2654428
[52]: KB2655992
[53]: KB2656356
[54]: KB2656373
[55]: KB2656411
[56]: KB2658846
[57]: KB2659262
[58]: KB2660075
[59]: KB2660649
[60]: KB2667402
[61]: KB2676562
[62]: KB2677070
[63]: KB2679255
[64]: KB2685939
[65]: KB2686831
[66]: KB2688338
[67]: KB2690533
[68]: KB2691442
[69]: KB2698365
[70]: KB2699779
[71]: KB2705219
[72]: KB2709630
[73]: KB2709981
[74]: KB2712808
[75]: KB2718704
[76]: KB2719857
[77]: KB2719985
[78]: KB2722913
[79]: KB2729094
[80]: KB2731847
[81]: KB2732487
[82]: KB2732500
[83]: KB2735855
[84]: KB2736233
[85]: KB2741355
[86]: KB958488
[87]: KB976902
[88]: KB982018
Network Card(s): 2 NIC(s) Installed.
[01]: Intel(R) 82579LM Gigabit Network Connection
Connection Name: Local Area Connection
DHCP Enabled: No
IP address(es)
[01]: 192.168.0.188
[02]: fe80::1dd7:8ab4:4932:6576
[02]: Intel(R) Centrino(R) Advanced-N 6205
Connection Name: Wireless Network Connection
Status: Media disconnected

8 Krypton

Rush33,

 

Places to look to see if your Connection is enabled

 

Go to Drivers & Downloads enter your service tag number, then select your operating system. Under Network, download and install the latest drivers.

I used these tweaks...

Intel ~ Recommended settings for 802.11n connectivity

Start, control panel, device manager. Click on Network and then right click on your wireless adapter, left click properties, power management. Uncheck the box, allow computer to turn off this device to save power.

 

I went to the power options, and changed the Wireless Adapter Setting, from Maximum Power Setting to Maximum Performance.

 

 

Rick


#DellRockstar

Welcome to Dell Community!

#DellWorld 2012
#DellWorld 2015
#Dell EMC World 2016

#MicrosoftMVP - Windows Expert-Consumer April 1, 2012 to March 31, 2015

This is a Dell User Forum. I am a Dell user, just like you are.
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