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no internet connection


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#1 nanup

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Posted 03 April 2009 - 09:16 PM

I have a computer Dell Optiplex GX520 with IE7. All of a sudden this computer will not connect to the internet. It is connected to a local network with DHCP. It started acquiring an invalid IP address like 164.XXX.XXX.XXX. It is a number not assigned by our DHCP server. I went in and assigned a static IP address and it will then connect to the local network. For instance, I can see file servers and printers, but when I try to access IE, IE will open but nothing shows. I get a message that cannot be displayed or cannot connect. I have uninstalled the ethernet card and updated the driver, but it still won't connect. I know that the network is working because I can access other computers and file servers. But I am at a lost as to why I can't get on the internet. I can't update IE because I can't get online. I have run Mal Ware Bytes and SuperSpyWare and computer comes clean. Of course I can't get the latest update because I can't get online. I have several of these computers, so I took the hard drive out and installed it in another computer, and the problem follows the hard drive. So there is something about settings, or software, or configuration on the hard drive that has a problem. Has anyone experienced this frustrating problem? I really do not want to reformat and install everything. I would really appreciate any help with this.
Thanks,
nanup

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#2 Budapest

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Posted 06 April 2009 - 01:03 AM

Log on as an administrator, go Start > Run and type: "cmd". In the window that appears type: "netsh winsock reset". When the program is finished, you will receive the message: "Successfully reset the Winsock Catalog. You must restart the machine in order to complete the reset." Close the command box and reboot your computer.

Go Start > Run > type: "cmd" In the window that appears type: "ipconfig /flushdns". Close the command box.

Go Start > Control Panel > Network Connections. Right click on your default connection, usually Local Area Connection or Dial-up Connection if you are using Dial-up, and and choose Properties. Double-click on the Internet Protocol (TCP/IP) item. Select the radio button that says "Obtain DNS servers automatically". Reboot.

Warning: Some Internet Service Providers need specific DNS settings. You need to make sure that you know if such DNS settings are required before you make this change.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




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