Cannot connect to Router

G

Guest

I have had a couple of good networks people look at this, but to no avail:
I have a Dell Latitude D800, on a wireless network on which there is also a
Acer TravelMate 2420. The Dell has WLAN 1350 mini PCI Card, built in. My
router is a Lynksys Wireless G ADSL Home Gateway. I am on Windows XP Home
Edition SP2.
The network has worked efficiently for a couple of years. Whenever I take
either computer away, they connect immediately with other wireless networks,
and all works well when I return home. I do not have to make changes to
anything.
Last week I visited my brother, whose network is protected by MAC security.
My nephew ran ipconfig /all on my Dell, noted the physical address, which he
entered in my brother’s network to allow me access. This worked OK.
Now that I have returned home, the Dell no longer connected to the router. I
have run ipconfig /all, and note that the ip address is now 169.254.101.191.
I can ping this from the Dell and get a reply. This address has nothing to do
with my brother’s network. The address it should be getting from my router is
192.168.1.1. The Acer can ping this address OK, but the Dell won’t. The Acer
cannot ping 169.254.101.191.
I have run ipconfig /flushdns, and tried ipconfig /release, and ipconfig
/renew. The Dell will not pick up 191.168.1.1.
I have AVG antivirus, up to date, and have run scans. I have also scanned
with Ad-aware 6.0.
Anyone any ideas?
 
C

CM

The "tweaking" done at the other place to enable your Dell Latitude D800
Laptop computer to join that "MAC network" might have corrupted your
"Wininsock" or Client for Microssoft Networks ". And this registry
corruption might have been responsible for your inability to get a DHCP
Server and the dynamically assigned IP Address in the 192.168.X.XXX range .
I expect the Acer TravelMate 2420 Laptop not so modified as the Dell Laptop
must be able to get the Dyanamic IP and DHCP SERVER and DNS Servers numbers
as before and must be able to connect to the Internet. unless you made
changes in that too.

The Dell Laptop connectivity problem is akin to Adware induced changes in
the Network connection Properties from their Registry entries being
corrupted.

You may try the freeware WinSock XP Fix 1.2 which you may be able to get it
from :
http://majorgeeks.com/WinSock_XP_Fix_d4372.html.
Hope this helps.
Good luck
 
G

Guest

Allowing your physical address in your brother's network should have had no
effect on your machine other than to grant it access to that network.

Have you tried using a static address in your network (and subnet mask and
gateway)? The 169.254.x.x address is an automatic private IP address (subnet
mask 255.255.0.0) that your machine self-assigns after failing to contact a
DHCP server for about one minute; your network machines can't ping it because
it is in a different subnet.

If something DID change on your machine since the last successful connection
in your home network, try using the System Restore feature, if you have it
enabled.

Keep us posted.
 
J

Jack \(MVP-Networking\).

Hi
If your system is not protected by the Wireless security log to the Laptop
Wireless parameters and make sure that the security is disabled.
If your system is protected, your nephew probably disabled it. So you have
to the laptop security to match your system.
In general.
My Wireless does not work - http://www.ezlan.net/wireless.html
Wireless Basic Configuration - http://www.ezlan.net/Wireless_Config.html
Wireless Security - http://www.ezlan.net/Wireless_Security.html
Jack (MVP-Networking).
 
S

Steven L Umbach

Try removing your home wireless network from the preferred networks in the
properties of your wireless network adapter and then try to connect to it
again making sure you are using the correct key for your network security
assuming you are using WEP or WPA security. I have often found that works
where for whatever reason the wireless connection does not seem to connect
again. Also make sure your home network is at the top of the list of
preferred networks.

Steve
 
G

Guest

Dear Steven and others

Many thanks for your replies. I cannot try them for a couple of days as I am
away, but I want to thank you all for your kindness in helping me. It is
wonderful that there are so many people willing to help others. I will reply
individually when I have tried what you have suggested.

Peter
 
G

Guest

Dear Steven, CM, JCB and Jack

I have at last got the thing to connect! Thank you all for your help, which
was most instructive, and I have learnt a lot about networking, routers and
so on.

Like many problems, when you find out the solution, it seems simple. I
followed Steven's advice of removing my network from the list of wireless
networks, and then re-installing it. The router asked for the pass key, which
luckily I have as it is rather complicated, and bingo! the connection was
made.

I am most grateful to you all.

Best wishes and thanks again

Peter
 

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