Ive tried several things to resolve this issue including: /flush dns setting dns to an explicit ip address (208.67.222.222 and 208.67.220.220) factory reboot of entire system to no avail. In fact, where once the issue was intermittent, it is now complete: i cannot connect to the internet. My computer runs on Windows 7 and is a TOSHIBA Satellite L455D I rely on Wifi connections, mostly at the same 2 or 3 locations please help, this has become an enormous thorn in my side.

Hi, Please understand, many problem could cause you cannot access the internet. And from your description, there isn’t any clue indicate that DNS related issue cause this problem. Please provide more information about this. If your computer is in domain, please let me know. “I rely on Wifi connections, mostly at the same 2 or 3 locations” Do you mean this problem occurs in three different network environment? If so, please use the DNS server address which provided from ISP. Also I suggest that you may try following steps to troubleshot this problem: 1. Use “ipconfig -all” to export the IP configuration post the result here. 2. Check whether you could ping to any website. For example, ping www.Microsoft.com. 3. Try to use “tracert” command to check the metric. For example, tracert 8.8.8.8. Please post the result here. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.