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Windows 7 IP address problems, no internet access - Cannot find IP address automatically

    Question

  • Yesterday, for some unbeknown reason, my previously connected Internet connection changed to unidentified network.  It wouldn't find a valid IP address, I recently fixed it by changing properties of the IP4 protocol by manually inputting the IP data and DNS servers, however, if it is set to find IP address automatically, it can't do it.

    What can I do to fix this, I only recently bought the laptop with Windows 7 Home Premium, so I can't see how it's affected in any way.

    I also stopped and disabled Bonjour, which I had read causes a lot of problems.
    Tuesday, December 22, 2009 12:03 PM

Answers

  • Hi,

     

    How does the computer connect to Internet, via DSL or Router?

     

    If the machine is connected via Wireless or router, I suggest you bypass the router and connect to cable modem directly for a test. Then, please refer to the following steps to obtain IP address automatically.

     

    1. Configure the connection to obtain an IP address automatically

     

    a. Click "Start", input "NCPA.CPL" (without quotation marks) to Start Search bar and press "Enter".

    b. Right-click the network connection and click "Properties".

     

    If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

     

    c. Click to highlight "Internet Protocol Version 6 (TCP/IPv6)" and click "Properties".

    d. Check "Obtain an IP address automatically" and "Obtain DNS server address automatically".

    e. Click "OK".

    f. Click to highlight "Internet Protocol Version 4 (TCP/IPv4)" and click "Properties".

    g. Check "Obtain an IP address automatically" and "Obtain DNS server address automatically".

    h. Click "OK".

    i. Reboot the computer.

     

    However, if the issue persists, please move on the next steps.

     

    1. Temporarily turn off firewall on the machine and router (If it has).

     

    2. Upgrade the NIC driver.

     

    3. Restart the computer to Safe Mode with Networking to check the result.

     

    What's the result now?

     

    Thanks,

    Novak

     

    • Marked as answer by Novak Wu Wednesday, December 30, 2009 3:24 AM
    Wednesday, December 23, 2009 5:43 AM

All replies

  • Hi,

     

    How does the computer connect to Internet, via DSL or Router?

     

    If the machine is connected via Wireless or router, I suggest you bypass the router and connect to cable modem directly for a test. Then, please refer to the following steps to obtain IP address automatically.

     

    1. Configure the connection to obtain an IP address automatically

     

    a. Click "Start", input "NCPA.CPL" (without quotation marks) to Start Search bar and press "Enter".

    b. Right-click the network connection and click "Properties".

     

    If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

     

    c. Click to highlight "Internet Protocol Version 6 (TCP/IPv6)" and click "Properties".

    d. Check "Obtain an IP address automatically" and "Obtain DNS server address automatically".

    e. Click "OK".

    f. Click to highlight "Internet Protocol Version 4 (TCP/IPv4)" and click "Properties".

    g. Check "Obtain an IP address automatically" and "Obtain DNS server address automatically".

    h. Click "OK".

    i. Reboot the computer.

     

    However, if the issue persists, please move on the next steps.

     

    1. Temporarily turn off firewall on the machine and router (If it has).

     

    2. Upgrade the NIC driver.

     

    3. Restart the computer to Safe Mode with Networking to check the result.

     

    What's the result now?

     

    Thanks,

    Novak

     

    • Marked as answer by Novak Wu Wednesday, December 30, 2009 3:24 AM
    Wednesday, December 23, 2009 5:43 AM
  • Hi I have the same issue I think but am having trouble understanding what to do to fix it. the above situation i have done and both were already on find IP address atomatically.

    I have tried turning off norton antivirus completly but haven´t uninstalled it. 

    I am traveling around south america so each connection is different it is through wifi connections and my computer is a toshiba netbook NB200 and is running on windows 7.

    I am not that computer savvy so it makes it hard?

    It seems that quite a few people have similar issues but i can´t figure it out


    any help would be great

    Jay
    Monday, January 18, 2010 3:25 PM
  • each wi-fi hotspot would be different, you have not provide any info to work with.

    we would need to know that it does not work witha KNOWN access point, not some ramdom hotspots which may or may not support your setup.
    Monday, January 18, 2010 5:31 PM

  • I had networking problems as well. 3 computers running Windows 7. 2 had Adobe CS3 installed which brings with is a piece of software called Bonjour. These two computers had no end of networking problems. 1 was a desktop connected to the router and the other was a laptop connecting via WiFi. Third computer didn't have CS3 and didn't have any trouble at all.

    In trying to find a solution (nothing seemed to work), I came across the solution shown below in a different thread and thought I would share it. I installed the upgrade for Bonjour (it's listed as Windows Vista 64 software) and all of my network problems cleared up. My thanks to "PDX Prod Mgr". Brilliant!


    "
    PDX Prod Mgr Users Medals Users Medals Users Medals Users Medals Users Medals
     Proposed Answer
    I had the same problem when I rebuilt my Windows 7 system.  I had CS3 installed on my system, it installs an old version of bonjour.  If you inspect your program files\bonjour directory, see if you have an EXE and DLL file dated 2006.   Jump over to apple's website and search for windows bonjour.   I found the newer download here:  http://support.apple.com/downloads/Bonjour_for_Windows    

    Download and install this (you don't have to uninstall the old Bonjour)  and reboot.  This fixed my install and I no longer have the network error you describe.  If you look at that folder now,  you will have the newer DLLs (and some other gunk.)   
    "
    • Proposed as answer by MattDud Wednesday, October 20, 2010 3:55 PM
    Sunday, February 14, 2010 6:05 PM
  • I was having networking trouble. Basically, i could connect yesterday and then couldn't today, but the other computer on the network, an XP machine could.

     

    I downloaded the Bonjour update, restarted and connected perfectly first time!

    Wednesday, October 20, 2010 3:56 PM
  • hi

    i have a electronic drive which connect my computer via LAN .

    which ip adress install by drive software in (TCP/IPv4)

    after that if i need need to connect internet by external LAN CARD what IP adress use for connect to internat?  

    Wednesday, April 10, 2013 12:04 PM