First, my apology for the vague OP.
Windows 7 boots okay. If a browser is opened, IE8, Firefox, Mozilla, or Opera, they indicate that they are unable to display the web page, no other error message.
There is no problem with the router. I have other PCs connected both cabled and wireless which are functioning great.
I open a command / dos, (cmd), window, ipconfig indicates connectivity to the router, pinging the gateway is successful, pinging urls, www.google.com, www.yahoo.com, www.cnn.com, resolve to ip but packet transfer fails.
I ran Malwarebytes, which indicated that the database was updated to the latest version, and found 185 items which were removed. I ran Malwarebytes two more times, both came up clean.
I rebooted to the native Windows 7 and the problem persists.
I booted with a hirens.bootCD using miniXP and was able to connect to the router and browse with out any problem. In this boot SuperAntiSpyware and Spybot S&D were run.
SuperAntispyware found 3 register entries and 5 infected files and 192 cookies. All were removed successfully. Spybot S&D didn't find anything.
The machine was rebooted to the HHD Windows 7 without any change. This is when I left my original post.
This is the second time that I have friends come to me with similar issues. The first I resorted to reinstalling the OS, Vista Home, after many hours trying fixes on another support, ITToolbox. I have been an unsubscribed member of TechRepublic for a few months so decided to subscribe to have access to another resource.
A couple hours later I rebooted and ran the Windows 7 Restore. All is fine now.
The owner uses this PC for web browsing, yahoo messenger, facebook mostly so it is pretty painless to get back to the where they want it. Norton needs reinstalled and iTunes, that is about it. Windows 7 created a backup directory for the user profiles so all their photos, which is all that is stored locally, are saved.
My challenge was to find the problem without having to resort to a restore.
Thanks much for your posts and suggestions.
D.