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One of my computers cannot resolve names

I have a small network which shares an ADSL broadband connection.  One laptop on that network now fails to connect to the Internet.  Internet Explorer says 'The page cannot be displayed'.  running the diagnostic reveals that the DNS is not working.  

'Query [www.microsoft.com] against DNS Server 4.2.2.2. (Type = 0x1, Options = 0x10e8) returns 0x2726
'Query [www.microsoft.com] against DNS Server 10.0.0.2. (Type = 0x1, Options = 0x10e8) returns 0x2726

The first DNS is Verizon, and I found that on an EE thread.  The second is the DNS that the network magically assigns by default.  I have forced these two DNS entries at this time.  

I should mention that at one point, the Laptop reported that it had the same IP address as another computer on the network.  I restarted and that was when the problem occured.  I had just installed a MS Update - Lord alone knows which one - there are just so many.

I can ping some hosts.  I can do NSLOOKUP for some sites.  I can still print and see the other computers in the LAN.  

I have plugged the laptop into the ethernet, and get the same problem.  I have disabled firewalls.  

Elsewhere on the network, I have a laptop running Vista which connects perfectly and wirelessly.  I have a desktop computer that connects on ethernet.  I have a Mac and an XBox also on the Ethernet.  For completeness, I have a Wii on the wireless network.  

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petermagee
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petermagee
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1 Solution
 
BurtAndersonCommented:
Have you tried other browsers and had the same problem? Is it a problem with the machine itself, or IE? I ask because if you can ping, you ought to be able to access the web. If it's IE, go to tools > internet options > advanced tab > reset button.

It'll kill any toolbars, plugins, etc. and return IE to factory default. If it's the machine, then that's another story. The voodoo gods are telling me to rebuild the TCP/IP stack, but I haven't had to play with that in ages. And I'm not on Vista, so I wouldn't be the one to walk you through that anyway.
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ctprofCommented:
Have you determined that you are connecting to your own wireless network and not a rogue unsecured network from the next building over?  ... Also,  is your ADSL router acting also as a DHCP server?  if so, take a look at the leases and clear the one that your laptop is holding.   Try disabling your wireless adapter when your ethernet is plugged in.   does this work around the problem?  If so, back to the wireless problem.... If it's not a rogue network as previously mentioned.. and it's not a problem with the lease... then you might have a problem with the wireless adapter in your laptop.  you can uninstall and reinstall the drivers for your wireless card... chances are very good that the manufacturer has an updated driver anyway.
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petermageeAuthor Commented:
I went into IE Avanced and did Restore Defaults and no change.

There are no other wireless networks in range, and I did turn off the wireless network adapter when I plugged in the ethernet cable.  

The lease is renewed on my computer (Is that through IPCONFIG?)  Yes the ADSL is the DHCP server.  

I tried to update the driver for the Broadcom 802.11b/gWLAN network adapter.  There is no old version to roll back,and no newer version.  It is on version 4.10.40.1  which has a copyright date of 2005.  Is it ok to Uninstall them and then re-install.  I would be hard pushed to find them again on the disks that came with the laptop!  

I am in agreement that the TCP/IP stack might need rebuilding - the laptop with the problem is XP.  (I only mention the V word because there is a ANOTHER laptop running that OS)
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BurtAndersonCommented:
Too bad it wasn't as simple as IE acting up. Try the TCP/IP stack. Can't hurt.

Go to Control Panel > Add Remove Programs > Add/Remove Windows Components > Networking Services > Details. Look for the checkbox with TCP/IP in the name. If it's checked, uncheck it, reboot, go back and check it, reboot and see if that fixes it.

It may not be using that feature, not all machines these days do; but it's worth a try. If it isn't already checked, I'd recommend leaving it alone.

If you need to replace the driver and get in a pinch, DriverGuide.com has it (I just checked). It's a useful, if annoying website. They provide a valuable service for free, though, so it's worth putting up with nagging. I've used them before and never had a problem with the drivers there, but be sure you scan to be safe.
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petermageeAuthor Commented:
The Simple TCP/IP services box was unchecked.  I left it alone as suggested.

The driver is next. I can't think that this is what is causing it, because I can actually see the wireless adapter and can print wirelessley from this computer.

I can connect to using ftp.  I just logged in to ftp.Apple.com.  does that tell me anything?
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petermageeAuthor Commented:
I can sign on to Skype too!
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petermageeAuthor Commented:
I still need help!  Anyone got any ideas  I think I need to re-install Internet Explorer - is that possible?
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BurtAndersonCommented:
Try other browsers first. If Firefox or Opera work, then it's got to be an IE problem, and a re-install might work. If it's an issue with the machine, then neither of the other browsers should work, either. It'll help narrow down the problem.

If you decide to uninstall/reinstall IE, you can go to Add/Remove programs (Control Panel) and uninstall IE. Then go to www.microsoft.com/ie and download the latest Internet Explorer.
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petermageeAuthor Commented:
I use firefox as well, and it does not work either.  Yahoo Messenger does not work.  Skype chat does.  

I installed IE 7.  No luck.

Any ideas?
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petermageeAuthor Commented:
I have a further thing to note.  When I start up, Windows tries to complete an install.  It fails.   Is there anyway I can find out what this install is, and perhaps enable it to complete?
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BurtAndersonCommented:
Is there an error message associated with the failed install?

I know you can find your updates at http://www.update.microsoft.com/windowsupdate/v6/default.aspx - but if your http protocol is corrupted or otherwise not working, you can't get there anyway. I'm sure there's a method local on your computer, but I don't know it offhand.

If you can, determine if you've installed Service Pack 3. This sounds like it might be one of the oddities associated with it. It's got a fairly nasty reputation. Lots of other folks on here are more knowlegeable about that patch than I am, though. I haven't had any problems with it since I'm still on SP2.
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petermageeAuthor Commented:
I think SP3 was the fix that I installed.  Should I uninstall it?  Can you do that?
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BurtAndersonCommented:
You can. Here are some related posts that may help.

Here's a little more evidence that we're likely on the right track:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/XP/Q_23663417.html?sfQueryTermInfo=1+remov+sp3

Apparently, it's done from the Add/Remove programs screen:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/XP/Q_23453672.html?eeSearch=true
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petermageeAuthor Commented:
That worked a treat - although it was pretty scary - it said lots of things would not work afterwards.  I know that one thing does not - I can't get a URL in an email to open up the browser.

To be honest I uninstalled before I read the links you pasted, Burt, so will review them tonight.  

Now should I try again to re-install SP3 or is it just something to be avoided forever (again maybe your links tell me that... will check tonight.)  I'm aamzed that it can have been that fix that did it.  What are Microsoft thinking?  They let themselves down so much.  

Thank you!  
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BurtAndersonCommented:
You're welcome, I'm glad it worked! I'd recommend leaving SP3 out of the mix. It seems to play nice with some machines, not so nice with others. Apparently, you've got one of the latter.
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