Unsolved
This post is more than 5 years old
9 Posts
0
5866
October 3rd, 2017 15:00
Latitude E6420 wired and wireless network both failed
Both the wired and wireless network adapters stopped working on my Latitude E6420. The wired ethernet adapter showed media disconnected (even when a LAN cable is connected), and the wireless adapter showed no networks available (there's a red x in the tray icon).
I plugged in a USB wireless adapter and downloaded and ran Dell diagnostics. The ethernet adapter passed the test but still showed the cable as being disconnected, and this adapter remains non-functional.
When it tested the wireless adapter the test passed but it kept insisting that no wireless network was connected. However the red x did disappear from the systray icon, and I was able to connect to a wireless network successfully (having now unplugged the USB wifi adapter. After a reboot the wireless adapter is now working again but the wired adapter remains in a "media disconnected" state, not recognising when a LAN cable is plugged into it.
Any idea how I can revive the wired ethernet adapter?
DELL-Jesse L
Moderator
•
17.7K Posts
0
October 5th, 2017 06:00
itm2,
Try the steps below to resolve the issue.
Step 1:
Check whether the network adaptor is enabled, if not, please go ahead and enable the network adaptor. Please follow the steps:
1. Open Network Connections by clicking the Start button , and then clicking Control Panel. In the search box, type adapter, and then, under Network and Sharing Center, click View network connections.
2. Right-click the network adapter, and then do one of the following:
· To disable the network adapter, click Disable. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
· To enable the network adapter, click Enable. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
For more information, please refer the link mentioned below:
http://dell.to/2y1q4Dh
If the issue persists, then try to uninstall and reinstall network adaptor drivers from device the manager and verify if it works fine.
If the issue remains the same .Then I would suggest you to update the latest network adaptor drivers from the manufacturer’s website and install the same on the computer and check whether it works fine.
In addition, let’s try these steps and check whether it helps in fixing your issue.
Step 2:
You can try resetting TCP/IP settings; please follow the steps mentioned below:
Note This section is intended for advanced computer users. If you are not comfortable with advanced troubleshooting, ask someone for help or contact Support. For information about how to contact Support, see the Microsoft Help and Support contact information Web site:
dell.to/.../2y2cteV)
The reset command is available in the IP context of the NetShell utility. Follow these steps to use the reset command to reset TCP/IP manually:
To open a command prompt, click Start and then click Run. Copy and paste (or type) the following command in the Open box and then press ENTER: cmd
At the command prompt, copy and paste (or type) the following command and then press ENTER: netsh int ip reset c:\resetlog.txt
Note If you do not want to specify a directory path for the log file, use the following command:
netsh int ip reset resetlog.txt
Reboot the computer.
When you run the reset command, it rewrites two registry keys that are used by TCP/IP. This has the same result as removing and reinstalling the protocol. The reset command rewrites the following two registry keys:
For more information, please refer the link mentioned below:
http://dell.to/2y1CAlW
Step 3:
Try refreshing IP address and check whether it helps. Please follow the steps below:
Click on start > type in cmd in search box> right click on the command prompt click “Run as administrator”.
A) Type in ipconfig /release {Press Enter}
B) ipconfig /renew {Press Enter}