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Connecting to the Internet

Posted on 2008-10-03
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Added new cable modem, new router, and three machines to the router.  First PC is hardwired to the router and it functioning perfectly, second machine (a laptop) is connected and functioning perfectly.  The third PC is the problem.  The wireless connection is successful on the third machine, and you can successfully ping the router; however, going beyond the router is the problem.  Additionally, in order to make the connection to the router, I had to manually input the ip information.  For some reason dhcp is not functioning correctly on the machine.  The pc is running XP SP2 and has been patched.  Additionally, firewalls have been turned off.  The cable modem, router and machine have been refreshed by powering off and on in order (too many times to count).  Any thoughts on what could be happening?
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Question by:McFWEB
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Expert Comment

by:freefromspam
ID: 22637205
Is the 2nd machine connected via wire or is it wireless?

When you set the IP address manually on the 3rd machine did you specify a DNS server?


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Expert Comment

by:Darr247
ID: 22637607
> The wireless connection is successful on the third machine, and you can successfully ping
> the router; however, going beyond the router is the problem.

First, set the Internet Protocol (TCP/IP) binding on the wireless card back to 'Obtain an IP address automatically'.

Delete the wireless profile on that computer (on the Wireless Networks tab if using wireless zero configuration), disable security (WPA/WPA2) on the router, and see if it connects AND fetches an address then.

If it works ok like that, you can be fairly certain it's a problem with the WPA or WPA2 encryption settings.
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Author Comment

by:McFWEB
ID: 22638754
Many thanks Freefromspam and Darr247.  

Freefromspam:  The 2nd machine is working beautifully with a wireless connection.  The 3rd machine is successfully connecting to the router by both wired and wireless, but not able to get beyond the router.

Darr247:  Unfortunately resetting to "obtain IP address automatically" and disabling encryption settings on the router doesn't seem to want to work with the 3rd machine.  It won't even connect to the router when it doesn't have the IP info manually input.  For whatever reason when you release the ip and renew it will leave the gateway blank.  So the PC gives the dreaded limited or no connectivity response, and isn't even finding the router.

Thanks again for any assistance you can provide.  
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Darr247 earned 500 total points
ID: 22640340
>  It won't even connect to the router when it doesn't have the IP info manually input.

Does it see the router's SSID in View Available Wireless Networks?

You did 'Remove' the router's profile from the Wireless Networks tab (right-click the wireless card in Network Connections and choose Properties), right?
Otherwise it doesn't help to disable security on the router, because the card will still be sending the security info saved in that profile, which won't match 'no security', of course.

If you followed the 'security checklist' in the manual when you set it up, you may have enabled the MAC filter too. Disable that as well. That's not much of a security measure, anyway, since MAC addresses are easily sniffed and spoofed.

After it tries to connect with 'Obtain an IP Address Automatically' (and you do the Repair, or release and renew manually with ipconfig), please open a command prompt window (Start->Run, type in CMD and hit Enter), and run the command
ipconfig /all >C:\ipconfig.log
then connect that computer to the router with a cable and upload that log file using the Attach File option below the message box here.
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Author Comment

by:McFWEB
ID: 22646779
Thanks Darr247 for your help. After receiving connection on both wired and wireless by manual ip config, I changed the setting to automatically obtain IP, released the ip config, renewed, rebooted and it came up.  I had done that twice before, but I'm not sure if the entire system was finally refreshed from cable modem, to router, to PC, so it completed the task.

Appreciate all your help.
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Author Closing Comment

by:McFWEB
ID: 31502879
Thanks so much for your help.
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