If HP Support Assistant is already installed on your computer, access the program by typing "HP support assistant" into the Windows search box. In Windows 7, click the Start Menu to access the search box. In Windows 8, click or swipe the right side of your screen.
As of October 2012, HP Support Assistant is pre-installed on all new HP and Compaq computers running Windows 7 or Windows 8. To install or re-install HP Support Assistant onto any computer with Windows 7 or Windows 8, download the free installation file appropriate for your computer from the HP Support Assistant page. Under the Download HP Support Assistant heading, there is one download link for notebooks, laptops and netbooks, and a second download link for desktop computers. When the download is completes, double-click the file to begin the installation process.