Hello here are the step by step process: -
1. Power on your Nighthawk wireless router.
2. Connect it to your modem using an Ethernet cable.
3. Pull up a web browser of your choice on your PC or laptop.
4. Type the default Nighthawk router login IP in the address bar.
5. Press the Enter key.
6. You will be landed on the Nighthawk login web page.
Click here for more info at: Nighthawk Router Login