Ping uses name resolution to resolve a computer name into an IP address.

Therefore, if you successfully ping an IP address but you cannot ping a computer name, there is a problem with host name resolution, not with network connectivity.

• Verify that DNS server addresses are configured for the computer, either manually in the properties of TCP/IP, or by automatic assignment. 

Try to ping the dns server addresses(DNS server addresses are listed when you type the ipconfig /all command) to make sure that they are accessible.

 if you cant ping you have to set right dns server adresses.