Click Start--Devices And Printers
In the Devices And Printers Window, Click On Add Printer button at the top or just by right clicking and selecting Add Printer
In the Use an existing port drop-down list, select USB Virtual Printer Port (Printer Port) and then click Next.
(If your printer is listed there are inbuilt drivers available for your printer in windows 7, if not you can try clicking on the windows update button to get more manufacturers and more printer models, or if you have a disc of your printer drivers you can use have disk option and point to that)
Click On Next
In the Printer name text box, type the printer name( leave the default printer name) and then click Next. The printer driver starts to install.
Click on the Print a Test page button and click Finish.
You are done, you have successfully installed the HP Printer in windows 7, The instakked printer will show in Devices and Printers Window as shown in the below Screen.