Drivers are required for the printers. Using them, the printers understand the task queue and the printout requirements. Hence, going to 123.hp.com is necessary so that the drivers can be downloaded. After going to the HP website, you need to enter the printer’s model number on the search box. All the drivers related to the printer’s model number will be displayed. You will have to select the driver, suitable for your printer. After downloading the driver's file, you need to install it. This would install drivers on your PC.