try following instructions for troubleshooting this issue. For Windows 7 or 8: 1. Hold down the Windows key and press R. (This will open the Run dialogue.) 2. Type cmd and press Enter. (This will open a command prompt.) 3. Type ipconfig /flushdns and press Enter. 4. Type ipconfig /registerdns and press Enter. 5. Type ipconfig /release and press Enter. 6. Turn off your Modem/Router and wait 5 minutes 7. Turn your Modem/Router back on, wait until it booted completely 8. Back on your PC, type ipconfig /renew and press Enter. 9. Type netsh winsock reset and press Enter. 10. Reboot your computer.
