Hi HafriRwanda,
Thank you very much for the additional information.
I'm sorry to hear that you've run into a problem with the installation. I have included 2 different documents for you. The first one is about using HP's Printer Install Wizard to install the printer onto your computer. The Printer Install Wizard will search for the best driver for your computer and printer. The second one is detailed steps on installing the driver without using HP's Printer Install Wizard and you've downloaded the software from HP.com.
How Do I Find the Best Driver for My HP Printer in Windows 7 or Windows 8
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c02681060
Installing the Printer Software in Windows 7 for a USB Cable Connection
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c03521864