Hey There, I am Sofia Carter. You start your computer and find the HP printer driver is unavailable. Then, you need to download the drivers from the HP website. For the same, you need to visit the HP website. Put down the model number along with the operating system. The website would list down the drivers suitable for your HP printer. You need to download and install the drivers. https://www.hpprintersupportpro.com/blog/resolve-windows-10-printer-driver-is-unavailable-issue/