Apps cannot access internet

[SoonerStud]

On my laptop, wireless connection, none of my applications can access the
internet. I do not
recall making any changes to any settings that could have made this occur.

I've tried both IE and FF and triple checked the proxy settings. iTunes,
other applications also cannot access. The wireless connection indicates
signal good and connected.

I disabled Zone Alarm and rebooted with the same results. Also ran the MSFT
TCP/IP stack reset tool to no avail.

Any brainstorming troubleshooting ideas?

 

[SoonerStud]

Some more info from Event logs:

not able to renew its address from network/dhcp server..the semaphore
timeout period has expired....

 

[Jack \(MVP-Networking\).]

Hi
It seems that you lost your Wireless connection between your computer and
the Wireless Router.
First plug you computer via a cable to the Router so that you can access the
Router and check all the settings.
May be this can further Help.
My Wireless does not work - http://www.ezlan.net/wireless.html
Wireless Basic Configuration - http://www.ezlan.net/Wireless_Config.html
Wireless Security - http://www.ezlan.net/Wireless_Security.html
Jack (MVP-Networking).