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Windows 7: Wired LAN Connection "Unidentified network" No network access

05 Jul 2014   #1
sanwijaya

Windows 7 Home Premium 64-bit
 
 
Wired LAN Connection "Unidentified network" No network access

Hey guys,
I have been using LAN for quite a while. However, last two weeks, it suddenly stopped working. I have tried several solutions but none of them worked. I don't know what's wrong and looking for help! Thanks, any help would be greatly appreciated!

following is ipconfig/all:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\System32>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : User-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 54-04-A6-09-8E-52
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c591:34c8:3aa3:7e50%17(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.126.80(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 290718886
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-0F-45-E9-74-2F-68-A0-C4-B1

DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 13:

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 . . . . : Yes

Tunnel 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

Tunnel adapter isatap.{50650130-A669-403D-93EF-12D8F1CD2485}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Windows\System32>


My System SpecsSystem Spec
.
05 Jul 2014   #2
sanwijaya

Windows 7 Home Premium 64-bit
 
 

This is ipconfig/all with wifi on.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\System32>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : User-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : uml.edu

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 54-04-A6-09-8E-52
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c591:34c8:3aa3:7e50%24(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.126.80(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 290718886
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-0F-45-E9-74-2F-68-A0-C4-B1

DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : uml.edu
Description . . . . . . . . . . . : Atheros AR9002WB-1NG Wireless Network Ada
pter
Physical Address. . . . . . . . . : 74-2F-68-A0-C4-B1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::3c33:a20:1b54:45ca%11(Preferred)
IPv4 Address. . . . . . . . . . . : 10.248.96.164(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Saturday, July 05, 2014 4:11:42 PM
Lease Expires . . . . . . . . . . : Saturday, July 05, 2014 6:23:58 PM
Default Gateway . . . . . . . . . : 10.248.96.254
DHCP Server . . . . . . . . . . . : 129.63.78.250
DHCPv6 IAID . . . . . . . . . . . : 242495336
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-0F-45-E9-74-2F-68-A0-C4-B1

DNS Servers . . . . . . . . . . . : 129.63.78.250
129.63.94.201
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.uml.edu:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : uml.edu
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 13:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:ccf:ba3e:7ec0:79f(Prefer
red)
Link-local IPv6 Address . . . . . : fe80::ccf:ba3e:7ec0:79f%17(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.{50650130-A669-403D-93EF-12D8F1CD2485}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel 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

C:\Windows\System32>
My System SpecsSystem Spec
07 Jul 2014   #3
2xg

Win7 & Win8 64bit
 
 

Welcome to Seven Forums,

Along with the troubleshooting tasks that you've done, have you tried a System Restore? If not, please follow this Tutorial and restore your computer back to when your were able to use your wired connection.
My System SpecsSystem Spec
.

07 Jul 2014   #4
sanwijaya

Windows 7 Home Premium 64-bit
 
 

The oldest restore point is two weeks ago. However, I realized that the wired connection has not been working for around a month. My friend also told me that he tried a system restore on my laptop but it still didn't work. Any other solution? Thanks
My System SpecsSystem Spec
07 Jul 2014   #5
2xg

Win7 & Win8 64bit
 
 

One of the solutions that you've done - have you tried updating the Ethernet driver to the latest?

Changing the Ethernet cable?

Disabling/enabling the Ethernet from the Device Manager?

Changing the Speed & Duplex setting of the adapter, here's how?
My System SpecsSystem Spec
08 Jul 2014   #6
sanwijaya

Windows 7 Home Premium 64-bit
 
 

Yes, it is up to date as I uninstalled it reinstalled it from the device manger. It is not the ethernet cable because if I plug it in to my brother's laptop, it works perfectly. I tried disabling and enabling from device manager and changing the Speed & Duplex to 100 mbps full duplex, but it still does not work.
My System SpecsSystem Spec
08 Jul 2014   #7
2xg

Win7 & Win8 64bit
 
 

You may try sfc /scannow command and if this didn't resolve your issue you might want to try getting a new ethernet adapter/card.
My System SpecsSystem Spec
09 Jul 2014   #8
sanwijaya

Windows 7 Home Premium 64-bit
 
 

This is what it says

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\System32>sfc /scannow

You must be an administrator running a console session in order to
use the sfc utility.

C:\Windows\System32>

What should I do?
My System SpecsSystem Spec
09 Jul 2014   #9
2xg

Win7 & Win8 64bit
 
 

If you please go back to the link that I gave you on how to run the sfc /scannow command, you have to run it in elevated command.
Elevated Command Prompt
My System SpecsSystem Spec
09 Jul 2014   #10
sanwijaya

Windows 7 Home Premium 64-bit
 
 

This is what it says. However, the LAN is still not working. I guess I need to change the ethernet card. Do you know how much will it cost approximately to replace it with a new one? Thanks for your help!

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>sfc /scannow

Beginning system scan. This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection found corrupt files but was unable to fix some of th
em.
Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example
C:\Windows\Logs\CBS\CBS.log

C:\Windows\system32>
My System SpecsSystem Spec
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 Wired LAN Connection "Unidentified network" No network access




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Microsoft Windows Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Jesse>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : JPC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid
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