Step1: Go to start menu then click Run

Step 2: Write ‘cmd’ in the box and press Enter.

 

Step 3: Then in the black window, write -

ping yahoo.com –t
or
ping 192.168.1.1 –t (whtich ip address want to ping)

Step 4: Then You get Reply that is link is ok

Step 5: If you Reply “Request time out” that is link is not ok and check the others options.