I downloaded and installed the 8.0 software for the L7580 All-In-One Printer and cannot get the fax driver to install. The printer is a network printer and I have tried both static and dynamic addresses. I can ping the printer and run the web _base_d fax and scan utility with no problem. I am running Vista Home Premium. During the install, if I try to add a device, the install software sees the printer but upon selection of the printer it says that no device was present. I've been through all levels of tech support with HP and no one can provide me the right answers. I also tried turning off the firewall. Still no success. Any assistance will be appreciated.

I am running  Vista Home Premium. This does not have the built in Fax & Scan VISTA utility so the system cannot see the scanner. If you install the HP software correctly it should then work from it but you might have to go into Services and disable Windows Image Acquisition (WIA) at least until you get the scanner working. Remember that with USB connected devices you must follow the instructions which usually specify not to plug the USB printer cable into the PC until after the software is installed, unless the installation instructions tell you to do so partway through. Best bet is to turn off and unplug the printer from the PC; delete all printer icons you see in the Printer folder; ditto if there are any scanner icons anywhere; and uninstall any of the HP software for this device that may be listed in the installed programs

I found HP Total Care Advisor (for instance) and  tried to uninstall and got the following message: The system administrator  has set policies to prevent this installation . OK

I had to use the Add Printer button in the  printer and faxes folder to install the print driver I think I've seen that in HP's website instructions as something to do if the software will not install. When you re-installed using RAA, you did not have the printer USB cable plugged into the PC did you? Did you think of turning off any AV protection and firewalls when installing the software? I've run into problems where they have messed with a file trying to install and either blocked it or delayed it while AV checking it until when it was released the installation program did not know what to do with this unexpected file!