Invalid IP Address - Can't Log In With Cable Modem

[Scully]

Recently I bought a used laptop. After three months of fighting to get
online, without success (either via modem or cable modem) I was told that I'd
have to completely slag the hard drive because the problem was being caused
by winsock errors. I did that, and now I can access the web via modem.
However, I still can't log in through cable modem.

No one can figure out why, but my IP address is set to a 169. value. This
is totally different from what our other computers on the same firewall use.
We looked through the registry, and found this invalid IP address in dozens
of entries. How can I get rid of this, and reset my computer so that it will
automatically find the right address? Deleting and reinstalling the TCP/IP
didn't work, and neither does repairing the LAN connection.

Many thanks, in advance, to anyone who can help me fix this!
--
~~ I got you, Mulder! I got you bigtime! ~~

[Robert L [MS-MVP]]

this may help. quoted from http://www.ChicagoTech.net
Why do I get 169.254.x.x IP?

Symptom: The Internet Assigned Numbers Authority (IANA) has reserved
169.254.0.0-169.254.255.255 for Automatic Private IP Addressing. If the
computer can't get ip from DHCP, APIPA provides an address that is
guaranteed not to conflict with routable addresses.

Resolutions: 1) Make sure you have good connection.
2) Check the hardware and settings.
3) Make sure the DHCP is working.
4) For the test, you can assign static ip. If static ip works, it is
possible DHCP issue. If static ip doesn't work, check the hardware or
connection.


--
For more and other information, go to http://www.ChicagoTech.net

Don't send e-mail or reply to me except you need consulting services.
Posting on MS newsgroup will benefit all readers and you may get more help.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
http://www.ChicagoTech.net
VPN Solutions, http://www.chicagotech.net/vpnsolutions.htm
VPN Process and Error Analysis, http://www.chicagotech.net/VPN%20process.htm
VPN Troubleshooting, http://www.chicagotech.net/vpn.htm
This posting is provided "AS IS" with no warranties.
"Scully" > wrote in message
...
> Recently I bought a used laptop. After three months of fighting to get
> online, without success (either via modem or cable modem) I was told that
> I'd
> have to completely slag the hard drive because the problem was being
> caused
> by winsock errors. I did that, and now I can access the web via modem.
> However, I still can't log in through cable modem.
>
> No one can figure out why, but my IP address is set to a 169. value. This
> is totally different from what our other computers on the same firewall
> use.
> We looked through the registry, and found this invalid IP address in
> dozens
> of entries. How can I get rid of this, and reset my computer so that it
> will
> automatically find the right address? Deleting and reinstalling the
> TCP/IP
> didn't work, and neither does repairing the LAN connection.
>
> Many thanks, in advance, to anyone who can help me fix this!
> --
> ~~ I got you, Mulder! I got you bigtime! ~~