My HP printer / all-in-one took ages to install on my Vista PC. It may be that you're not giving it enough time to do all its installation things. I suggest: (1) you click on Start - Settings - Printers to see if there's anything there. If not you could try clicking on Add a Printer and see what happens. (2) Start - Programs - HP, again see if anything is there. If your printer appears on the list you could try clicking on Uninstall as it is possible you've only managed to do a partial install. (3) When the Uninstall is complete. Unhook the printer and start again from scratch allowing plenty of time for all the various bits of the installation to complete before you start trying to use the printer. (I recommend making a cup of tea and checking progress from time to time!)