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Changed Broadband ISP from Comcast to RCN and now cannot access the internet

Posted on 2004-09-04
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Last Modified: 2013-12-14
System: Home Made Intel P4 2.8GHz, Asus P4P800D mobo, 512MB RAM, 3COM gigabit NIC...

I recently moved to a new apartment, and in the process was forced to change my ISP from Comcast to RCN.  I had had software installed for Comcast and knew well enough to uninstall it once I moved into my new place, however even when the modem is connected directly to the NIC in my computer (normally connected to a switch to share the connection with my roomate) I am unable to connect to the internet.  I still see the animated comcast "C" in the top right hand window of explorer, so I know that somewhere their software still exists.  Their folder still exists under Program Files, however all it has inside are empty folders (not even hidden files).

I have tried release/renew, changing NIC settings, as well as changing my connection settings (though XP will not let me delete the connection).  When I do ipconfig it lists a local IP that I cannot connect to even from my roomate's computer when the two were connected via a switch.

NOTE: RCN says that there is no software necessary to install.  Have spent over an hour on the phone with Comcast "technical" support and in all their wisdom, they believe that there's no way to fix the computer.

There's probably more I'm meaning to say, so please ask if anything is unclear or if you need further information.  Thanks in advance...
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Question by:mmb8884
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Accepted Solution

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lrmoore earned 500 total points
ID: 11982211
Assuming that you are using XP, try resetting the TCP/IP stack..


Reset TCP/IP in XP:
http://support.microsoft.com/default.aspx?scid=kb;[LN];299357
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by:mmb8884
ID: 11982841
wow...yes I did leave  out  one of the  largest details.  I am in fact running Windows XP  Pro.
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LVL 79

Expert Comment

by:lrmoore
ID: 11999982
Any updates for us? Did you reset the stack ?

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Author Comment

by:mmb8884
ID: 12028819
I followed the directions given by the page you sent me a link to on MS' site, however the computer was still unable to access the internet (appeared to have no change).
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Author Comment

by:mmb8884
ID: 12040262
I had a friend look at the system and call RCN.  Through his "wisdom" he concluded that it had to be hardware related and suggested I throw a new NIC in a PCI.  After a few minutes of installing the driver and configuring the card I got the popup in the bottom right hand corner of the screen saying I was connected at 100Mb/s.  Opened Explorer and up came google.com.  My friend decided that the integrated NIC on the mobo must just have died, and whether or not he's right, a new NIC revived the system.

Thanks for your help lrmoore, I apologize, I didn't realize that this would have had such a simple fix, though was always a head scratcher.  I appreciate the effort though so I'll give you the points since no one else posted.  Thanks again, and thanks to anyone else that was thinking of/for me, but just didn't get around to posting...maybe next time!
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