access Network Diagnostics from within the Start Menu's Help and Support option. From there click the Use Tools ... link under Pick a task, and then click Network Diagnostics from the list of tools. When you click Scan your system, Network Diagnostics will scan all the items specified, a process that should take between 30-60 seconds and result in a PASSED or FAILED for each item once the entire scan is complete. If any of the items can't be reached or if the response is intermittent, it will be marked FAILED indicating that it's the likely source of the problem. a failure only under DNS Servers indicates that either the DNS servers are down or your Internet connection to them is.
Edited by krmooo, 29 January 2008 - 05:39 PM.