How to Setup Printer for windows? To begin with, do the HP Printer Setup using the Windows system and complete the initial Printer setup using 123 hp com setup. Ensure whether the Power & Network connection is stable to access. Open the Windows system and search for the Devices & Printers option on it. On the resultant page to the option provided, click Add a Printer option. Select the device or printer to be added to the Windows using the list of scanned names. Opt for the desired Printer name and click the Next option. Further, connect via driver setup and install using the on-screen instructions.