THe device worked under XP with HP supplied SW before I upgraded to VISta
Businesss.
Did this software include its own faxing and scanning utilities? I can't
find much in the way of details of the 3300mfp but if it uses TWAIN to
comunicate between device and PC then VISTA's Windows Image Acquisition /
Fax & Scan don't recognize TWAIN.
But what I found with my very old HP SJ5P scanner is that I could install
the early Deskscan 2.9 software that uses TWAIN and then I can Scan (I don't
use PC Faxing) by using the HP scanning and copying utilities. I also found
that it did put Fax to commands in Irfanview and in MS WORD and that they
work fine.
The important thing is to take the HP XP software that includes scanning
(even XP and earlier seems only to be PCL printing) and install that using
Compatibility mode set for an earlier version of Windows -- I used XP with
SP2 since I knew it ran under that -- and then started the installion with
Run as Administrator.
To do that I located the file to start the installation -- say setup.exe or
autorun.exe -- and right mouse clicked on it and selected the Compatibility
TAB. I set the version of Windows there and I checked [X] Run as
Administrator and OK'd my way out.
If the 3300mfp is connected by USB cable then make sure the cable is not
plugged into the PC so that the HP software will be installed and VISTA's
Found new Hardware does not take over.
I suggest you try this but first uninstall any HP device software you may
alaready have installed, delete and Printer or Fax icons in Printing and
Faxing. Then reboot -- making sure that USB cable is not plugged into the PC
-- and start the installation as indicated above.
Do not turn on the printer and connect the cable to the PC until either the
installation procedure tells you to or you reach [Finish].
Good luck
PS -- You don't have UAC turned OFF do you? If so try with it turned on.