Muhammad Danish Yousfzai :
My laptop i5 latitude is connected with a WiFi connection but when I open any browser it shows no internet connection
This may be way off but I was having the same problem and nothing work. This however did work for me:
Open your Network and Sharing center. Click on Change adapter settings. Then right click on your connection Wi-Fi or Ethernet. Select properties and uncheck Internet Protocol 6 (TCP/IPv6). Reboot and see if you have internet now.
Worked like a charm for me. I was going nuts trying everything people posted.
Let me know