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Unable to access networks

Last response: in Networking
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August 28, 2012 7:09:57 PM

Hi,

As of this morning my PC (running Windows 7) has been unable to connect to my house's router, wired or wirelessly. With the cable plugged in, it tells me that "No connections are available". When I open up Network and Sharing Center, it gives me the message:

"The specified device does not exist as an installed service"

When I run troubleshooting on it, the problem it finds is:

""Local Area Connection" doesn't have a valid IP configuration"


Other devices (for instance, the windows 7 laptop I am currently using) are able to connect to the internet through the router without issue, wired and wirelessly. This means that the problem is related either to my computer, or the connection between the router and my computer.

IP config returns the following:

Quote:

C:\Users\John>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : John-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : sns.nottingham.ac.uk

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : sns.nottingham.ac.uk
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : BC-AE-C5-66-37-E9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2d3e:D 741:ec9e:e512%10(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.229.18(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 128.243.46.113
128.243.42.59
Primary WINS Server . . . . . . . : 128.243.253.2
Secondary WINS Server . . . . . . : 128.243.253.6
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter 6TO4 Adapter:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 Adapter #2
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 . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.sns.nottingham.ac.uk:

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

C:\Users\John>





I've tried the following steps without success:
- reinstalling the network adapter on the PC

- restarting the router

More about : unable access networks

August 28, 2012 7:13:41 PM

Accidentally pressed submit. Message continues:


- accessing the router's list of devices. The PC isnt in the list



I'm out of ideas. I've seen a lot of similar threads on various forums, but none with the same exact problem.

Any help would be greatly appreciated.

- John
August 30, 2012 8:21:01 AM

Update: I created a new partition and installed Windows 7 to it again, so I can boot either copy. The new one accesses the internet just fine, which rules out problems with the network adapter or its drivers. The problem must therefore be related to that particular Windows install somehow...
!