Copy and paste these lines in Notepad.
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
Save as flush.bat to your desktop.
Double Click flush.bat and let it run.
Your computer will reboot itself.
Let me know how it's running.