Go to Start Menu and Type cmd in the search box.
Right click on cmd in the programs search results and choose Run as Administrator
Once the command line window is open type the following command at the prompt and hit enter
ipconfig /flushdns
Go to Start Menu and Type cmd in the search box.
Right click on cmd in the programs search results and choose Run as Administrator
Once the command line window is open type the following command at the prompt and hit enter
ipconfig /flushdns