After log into belkin router panel via default password, you can easily change the password using this guide:
Connect your pc to the belkin wifi.
Open the belkin router admin dashboard,
Go to system settings under utilities.
Type the old password.
Now type the new password for your router admin and confirm the new password again.
Click on apply changes.
Finally, your router password will be changed. you may go ahead and try to access your router now. your password will be changed.