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Not able to obtain IP.

Discussion in 'Networking (Hardware & Software)' started by Munson, 2010/10/27.

  1. 2010/10/27
    Munson

    Munson Inactive Thread Starter

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    Greetings guys, thanks for any help you can give me. Mind you this is my first post, so let me know if you need anything. First I have a simple network in my house, the cable comes into cable modem then to linksys router. The router then has 3 computers connected to it via ethernet. I just built a new PC and want to remove 1 of those 3 and put the new unit in it's place. When I connect everything it boots up(Win 7/i7 870/4gb) and it tries to establish connection, eventually it fails the Windows Troubleshooter says its unable to obtain IP address. I goto CMD and try to release and it says "An error occurred while releasing interface Loopback Pseudo-Interface. System cannot find the specified file ". Then I unplug new-PC and use old PC and all works fine. :(
    So Quick Recap of Fixes I have tried
    1. Uninstall NIC card(which is on MOBO) then reinstalled - FAIL
    2. Unplug router & cable modem - FAIL
    3. Go into router control and RELEASE & RENEW DHCP

    The OS is brand spanking new, so I know it is not a 3rd party software issue since there is no software. I also assume the DHCP services would be turned on, however I will be checking this when I get home.

    Any ideas would be GREAT
    Chris
     
  2. 2010/10/27
    Arie

    Arie Administrator Administrator Staff

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    Have you installed the motherboard drivers (which include the Network driver?)

    Check your Device Manager for errors.

    What does the command netsh interface ip show config show?

    Easy way is to run netsh interface ip show config >c:\ipconfig.txt, then copy the contents of c:\ipconfig.txt in your reply.
     
    Arie,
    #2

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  4. 2010/10/27
    Munson

    Munson Inactive Thread Starter

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    Arie, thanks for the quick reply. I am currently at work and will run that as soon as I get home and post it. As far as the information about the driver, yeah all drivers are good. Expect a post in here with 5 hrs
    Chris
     
  5. 2010/10/27
    Munson

    Munson Inactive Thread Starter

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    Update 4:34PM

    Configuration for interface "Local Area Connection "
    DHCP enabled: Yes
    IP Address: 169.254.28.65
    Subnet Prefix: 169.254.0.0/16 (mask 255.255.0.0)
    InterfaceMetric: 30
    DNS servers configured through DHCP: None
    Register with which suffix: Primary only
    WINS servers configured through DHCP: None

    Configuration for interface "Loopback Pseudo-Interface 1 "
    DHCP enabled: No
    IP Address: 127.0.0.1
    Subnet Prefix: 127.0.0.0/8 (mask 255.0.0.0)
    InterfaceMetric: 50
    Statically Configured DNS Servers: None
    Register with which suffix: Primary only
    Statically Configured WINS Servers: None
     
  6. 2010/10/28
    neb

    neb Inactive

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    When you get an IP address in the range 169.x.x.x that means you get an IP address from an Windows service, NOT from a DHCP server. This is called "APIPA (Automatic Private IP-addressing) ".
    This means your PC does not see an DHCP server (Why I don't know).
    I suggest that you configure your PC with a manually installed IP address, IP Mask, IP Gateway and DNS Servers (you can see the IP range from the other PCs in your network)
    If that works then you are sure that your PC = OK.
    Have you cheched that te service "DHCP Client" is running on your PC?
     
    neb,
    #5
  7. 2010/10/28
    Arie

    Arie Administrator Administrator Staff

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    I wouldn't configure a manual addresses (though you could try for troubleshooting).

    First check to see if TCP/IP is installed properly. What does show when you run:

    ping 127.0.0.1

    If you receive an error message at this point, TCP/IP is not properly installed.

    Make sure the cable you use (between PC and router) is working properly.

    If the above is good, set your network to automatically obtain a DHCP address. Run:

    netsh interface ip set address "Local Area Connection" dhcp
     
    Arie,
    #6
  8. 2010/10/28
    Munson

    Munson Inactive Thread Starter

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    Arie, I am able to ping using that.. It goes four times and says all is good. For your next troubleshooting step, you say "Local Area Connection ", am I supposed to put "Local Area connection" or a name of the router?
     
  9. 2010/10/28
    Admin.

    Admin. Administrator Administrator Staff

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    From a command prompt run this command:
     
  10. 2010/10/28
    Munson

    Munson Inactive Thread Starter

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    After entering that in CMD prompt(with Run as Admin) it says DHCP is already running.. next idea?
     
  11. 2010/10/28
    rsinfo

    rsinfo SuperGeek Alumni

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    Is DHCP turned on in your router ? What is the current config of your existing computers ? Are they using DHCP or static [manual] IP ?
     
  12. 2010/10/28
    Munson

    Munson Inactive Thread Starter

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    The router is DHCP enabled, all other computers connect dynamically(not static)..I have never once had to enter IP address. the same cable connects to the PC I am typing from as we speak so the cable is good, the NIC is good, I am at a lose
     
  13. 2010/10/29
    Arie

    Arie Administrator Administrator Staff

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    Sounds like a hardware problem to me. Make sure both NICs (usually there are two NIC's on new MBs) are enabled in BIOS.
     
  14. 2010/10/29
    Munson

    Munson Inactive Thread Starter

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    I doubt it is hardware issue(unless router or cable modem problem) cause I can physically bring the PC upstairs and connect it and it works fine.. but I know the cable is ok cause it works on my current PC
     
  15. 2010/10/29
    Admin.

    Admin. Administrator Administrator Staff

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    OK, I won't try anything else, I'm not going to battle ghosts! If it works upstairs & not downstairs it's either hardware or something from another dimension!
     
  16. 2010/10/29
    Munson

    Munson Inactive Thread Starter

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    Will be switching out router today and will let you know, thanks for your help
     
  17. 2010/10/29
    Munson

    Munson Inactive Thread Starter

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    New router worked, I am able to connect to internet with this computer. Only one problem, the amber light is on which means its moving at base 10 not base 100.. I go into the LAN adapter and it says auto..ideas on how to correct?
     
  18. 2010/10/29
    rsinfo

    rsinfo SuperGeek Alumni

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    Change LAN adapter setting from "Auto" to 100 Mbps Duplex.
     

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