Printer shows 'driver is unavailable' and won't print

That message means Windows couldn't match a driver, and removing and re-adding the printer just reuses the same leftover one. Do the full clean. Remove the printer in Settings, then open Print Management (search it from Start), All Drivers, right click the HP entry and Remove Driver Package. Restart. Then install the HP Smart app from the Microsoft Store or the full driver from HP and let that add the printer, rather than adding it from Settings first. If it's a wifi printer also look in Windows Update, Advanced options, Optional updates, printer drivers often sit there waiting.