Step 1: Open an Internet browser (such as Internet Explorer) and enter http://dlinkrouter.local or http://192.168.0.1 into the address bar. Press Enter. 

Step 2: Enter the password for your Admin account in the field provided. If you have not changed this password from the default, leave the field blank. Click Log In.

Step 3: Move the cursor to the Management tab and then click System Admin from the drop-down menu.

Step 4: To change the administrator password, enter a new password in the Password field of the Admin Password section. If you wish to enable CAPTCHA graphical authentication when logging in, click the slider next the Enable Graphical Authentication (CAPTCHA). 

Step 5: Click Save to save your settings.