Thanks for the help bro but on previous 2 instances when I changed the password there was no problem even though I haven't changed the password in modem but anyways I will try your method thanks once again for the reply
try to post the screenshots as essbebe said !
If you are not using dialer, you have to update it in the
router/modem !
And about your previous two instances: password wouldnt have changed !
I changed password once and it wasnt working after i entered that in the router! later i used the old password and started working . So, there was a problem changing password few months back.
Since you are getting username/password error, password is changed in the portal and you need to change in the router/modem or Dialer (if you are using a dialer to connect) !
You are connecting to the BSNL servers thru your modem. Password/username is either stored in modem/router or the dialer you use to dial (if you use) ! So once you change the username on portal, it wont get updated in router/modem or Dialer automatically !
to get in there you have to use IP of your gateway
ie,
http://192.168.1.1 (most cases 192.168.1.1 is gateway)
Give all the relevant info next time.. router name/model, IP address
(as essbebe asked)