Having The Correct information is Quite important. Can't log into 192.168.1.1
Enter this in to the browser address bar and hit enter. A new pages will open enter the username and password. You can find this on the back of your router.
If you have no way to access the username and password then go for rest to factory default option.
reset to factory default process:-
Keep the router powered on, search for the reset button that is available on the back of your router.
use some small and pointed like a paperclip, hold down the Reset button for 30 seconds.
Release the Reset button and wait 30 seconds for the router to fully reset and power back on.
Once it completed then repeat the repeat the first point but this time you have to try the combination
Username = admin , Password = admin
Username = admin, Password = Password
Username = admin, Password = (Leave it blank)
It may help you access the setting page
