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Browser DNS Problem

I have a Windows 7 machine that can't access the internet through a browser (IE or Firefox) and other applications (Thunderbird, AVG Update) can't access the internet. However, I can open a command prompt and ping yahoo.com.
I have flushed the DNS and registered the DNS and it has not helped. Browser error messages refer to DNS. I can't get to the gateway in the browser either (
I can access the computer remotely.
Can somebody give me other things to check. The user can't tell me what they did to break it. It was working a week ago and now it isn't.
There is no third party firewall, just the Windows firewall.
1 Solution
Miguel Angel Perez MuñozCommented:
I think that is not a DNS problem. If you can resolve using command line (ping in this case) DNS are correctly configurated and running fine.

Has configured proxy or whatever? try to reset router if is only computer on the network.
CraigPresidentAuthor Commented:
There does not appear to be a proxy and there are 3 other computers on same router and none of them have a problem getting to the internet.

First of all check the TCP/IP settings on your computers.

Then check with ping command. Are you able to access the router? Whatever your router IP address?

Tushar Kaskhedikar
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CraigPresidentAuthor Commented:
Tushar - TCP/IP settings are set to "obtain automatically".  As stated in first post, I can ping outside local network - yahoo.com - from command line. I can ping default gateway - from command line, but when I try to go to gateway - - in any browser, it returns error saying can't find address or DNS error. I can't access router from the browser.
Try doing a hard reset on your router.  There should be a little pinhole where you can stick a paperclip in--hold it in for roughly 8 seconds until the lights all light up and then let the router reconfigure itself back to the default settings.  This may require you to input certain user information to gain access to your ISP but it sounds to me like there might be some settings messed up on your router.
CraigPresidentAuthor Commented:
Midnight - I will give that a try, but the fact that two other computers attached to the same router can access the internet through their browsers without a problem and the fact the problem computer can ping outside locations and Windows updates work seems to indicate that the router is not the problem. But I will give it a try and report back.
CraigPresidentAuthor Commented:
Additonal issues necessitated a reinstallation of Windows in the interests of saving time. So this is a non issue at this point. I am going to close the question.
CraigPresidentAuthor Commented:
Problem was solved by reinstalling Windows.

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