PC unable to identify router/network (wired)

Discussion in 'Windows 7 Networking' started by penderel, Jul 9, 2012.

  1. penderel

    penderel New Member

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    Hi,
    I am hoping that someone out there will be able to assist.
    Last Friday my main desktop crashed (lost power to the machine) and on restarting the PC was unable to ‘identify’ the network. By identify, I mean, when using “Network and Sharing Centre” on the basic network information page, the PC shows “Identifying” under “active networks” – no matter how long I leave the PC.
    PC details
    Model: Packard Bell Power x-30
    Processor i7 870 @2.93GHz
    RAM: 8GB
    O/S: Windows 7 Home Premium (64-bit)

    Modem Router details
    Netgear N300 Wireless Dual Band ADSL2+ Modem Router

    The main desktop is connected to the modem router (via Ethernet). The modem router is showing no sign of any problems itself, all the dashboard lights look ok (i.e. power is on, port 1 shows the Ethernet connection in place, both wireless bands are lit, the DSL is lit and so is the internet). The household contains a number of laptops which continue to work ok wirelessly and/or wired through Ethernet. Even mobile phones are accessing the wi-fi ok.
    Using the main desktop, I ran ipconfig/all which I supply below.

    Microsoft Windows [Version 6.1.7600]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Users\Alan>ipconfig/all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Westray-Gamer
    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. . . . . . . . . : 10-78-D2-70-1E-B1
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::4154:39bd:f975:e1d6%11(Preferred)
    Autoconfiguration IPv4 Address. . : 169.254.225.214(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.0.0
    Default Gateway . . . . . . . . . :
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.{D422C659-4CEF-49F7-AA96-8AB8BC01DCF2}:

    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 . . . . : Yes

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    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

    The DNS Server address looks ok, as that is the address of the web page to the router. I cannot access that web page (address) via the main desktop, but I can from other devices ok.
    Having gone through Device Manager the Realtek PCIe GBE Family Controller is showing as “working properly”.
    I have tried pinging the DNS Server address, and that fail
    I have gone through a system restore to a previous point (before the day of the crash) but that seems to have made no difference either.


    I have attempted to set the IP addresses (for TCP/IPv4) directly
    IP address 192.168.0.3
    Subnet mask: 255.255.255.0
    Default Gateway: 192.168.0.1
    And therefore forced to set the DNS Server address too
    Preferred DNS server: 192.68.0.1
    But I don’t know what to set for the alternate DNS Server, so left blank.
    This seems to step me forward, in that the device/network is now identified. However the internet access is still not work, as the "DNS Server is not responding"

    Any help or guidance very welcome

    Alan
     
  2. Saltgrass

    Saltgrass Excellent Member
    Microsoft Community Contributor

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    From your description, I think I would run a System File Check to see if all your system files are intact. Open an administrative command prompt and type SFC /scannow

    Let us know if it comes back with any errors.

    I would then try to reinstall the driver for the Network Adapter, maybe it was corrupted.

    Probably running a chkdsk would not hurt to check for file corruption.

    After you have rebooted everything, including the ADSL Gateway, try again. If nothing happens, try right clicking the top network Icon (before the globe) and see if it offers to set the network as Public or Home.
     
  3. patcooke

    patcooke Microsoft MVP
    Staff Member Premium Supporter Microsoft MVP

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    You may find IPv6 is causing a problem - it's not being used so you should disable it.
     

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