What To Do When No Computers On A Network Have Web Access

If you suddenly find that none of your computers has Wi-Fi Internet access, 
first shut down your modem and router, and then restore power to them in that 
order. This often resolves such issues. It's always possible that you really do 
have no Internet access, possibly because of a problem with your ISP (Internet 
service provider). Call to see if the ISP is receiving any reports of outages. 
You can test the router itself by taking it out of the loop and connecting a 
system directly to your broadband modem. If the system can connect without the 
router, the router may be at fault; swap it out, if possible, and see if the 
problem is resolved. (Don't leave the computer connected directly to the modem; 
without the router in the loop, you're missing an important layer of protection 
against hackers.)
David Ferrin
www.jaws-users.com
Life is what happens after you have already made other plans.
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