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HP Notebook PCs - Troubleshoot a Lost Internet Connection on a Wireless Network with Vista

This document pertains the HP Notebook PCs with Windows Vista.
If the computer is not using the Vista operating system, see:
Read this document if you have been using your computer to connect to the internet and receive e-mail, but suddenly the computer displays a browser error message:
  • cannot display the web page
  • dns_unresolved_hostname
  • or a similar error message.
This document covers how to troubleshoot the problem symptoms and follow the quick tips to re-establish a connection.
Top reasons for lost connections
The top issues that cause a lost network or internet connection are:
General network troubleshooting
If the network problem is not resolved after performing the actions to correct the IP address and security key issues listed above, perform the following general network troubleshooting actions.

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