i found and copy/paste this advice by user chev65 over at eightforums.com. can
you try and post back if it work or not. thanks
"Winsock entries tells Windows 7 how to access your network services. Additionally, your TCP/IP protocol can be corrupted. The TCP/IP protocol is a stack of 4 layers that includes several transport layers, but when this stack is corrupt you will constantly
have connectivity issues.
Type or copy each command one at a time into an elevated command prompt then hit "enter" after each one, then reboot your machine.
netsh winsock reset catalog (reset winsock entries)
netsh int ip reset reset.log hit (reset TCP/IP stack)
If it's something on the wireless side then you should install Xirrus wifi inspector. A screen shot of this will show me the wireless landscape your area and adjustments can be made from there.
Wi-Fi Inspector | Xirrus"
these are threads and he minght help you with
www.eightforums.com/network-sharing/14126-poor-wifi-behaviour-blank-chrome-tabs.html
www.eightforums.com/network-sharing/14112-problems-internet.html
Also try to disable any antivirus software running (completely uninstall if free) and re install drivers and/or
update router firmware if any.