Internet Connectivity Issue

There are often times when you are not able to connect your Laptop/Desktop to your wi-fi. You tend to think that your router is not working fine but it is not always the same. Following are the measures that has to be taken if router is working fine but you are not able to go online.You can use the following commands.

1. ping  the gateway of your router(here gateway means ip address of your router to access the router interface).If you are getting 0% loss then your gateway is connected to your computer.         
2. To check the internet connectivity either you can ping "4.2.2.2" or you can ping any website ex"ping www.google.com",if you get 100% loss it means internet is not working and in that case you need to check your router .
3. To check whether the network adapters of your computer is working or not you can use loop back command, The syntax for the command is : "ping 127.0.0.1" (this is the default address of every network adapter). If you are getting 100% loss then the adapter of your system is not working.