BSNL Connection Destination Net Unreachable Invalid Username Password

While I connect the internet connection. I can’t get the web page I get the Server not found.
So I open the command prompt start>run>ping google.com
I go the following error message.
Reply from 10.x.x.x: Destination net unreachable.
Reply from 10.x.x.x: Destination net unreachable.
Reply from 10.x.x.x: Destination net unreachable.
Reply from 10.x.x.x: Destination net unreachable.
0 Net Unreachable
1 Host unreachable2 Protocol unreachable
3 port unreachable
4 fragmentation needed
5 Source Route failed
ICMP - Destination net unreachable message is one which a user would usually get from the gateway when it doesn't know how to get to a particular network.
These problems occur due to unclean system shutdown (improper Shutdown) .
For these reason it is automatically reset the Default password.
To resolve these issue we need to login in the Router configuration
Http:192.168.1.1 and login with user name and password.
Username:admin
Password:admin
Checks the entire password is correct or wrong.
After enter the correct password enable the save and reboot. Then try it.
IT will work perfectly.Or if these network connection is normal then you need to disable firewall and anti virus.Then try it will work perfectly.