Some computers cannot connect to internet

I had 4 computers at home: 2 desktop computers running XP, a laptop running XP and a laptop running Windows 7. A desktop and laptop computer running XP were connected to my LAN without any problems before. Recently, I tried to connect another desktop computer and laptop with Windows 7 to my network and both say that they hooked up, but with little or no connectivity and they can use the internet. However, the two other systems that have been connected before work perfectly well.

I tried to repair the connections by restarting my network and by running "netsh winsock reset catalog" and 'netsh int ip reset reset.log' and the office and cell phones with 7 still not connect with little or no connectivity. Meanwhile, two computers I've had for a while can connect without a problem.
I don't know if it's important or not, but the night before I first tried to connect two computers that does not properly connect, there was a bad storm and many people were without electricity for a day.

http://support.Microsoft.com/kb/892896

Tags: Windows

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