We tried but failed to load HP Scanjet 5200C drivers (was HP XP drivers) in
Vista.
How is the scanner connected to the PC? USB or Parallel or scsi?
If it's USB you must disconnect the USB cable from the PC and install the
software first, then connect the USB cable when told or after Finish.
If you want to try this again make sure that you disconnect the scanner,
delete any icons there may be for it in a Control Panel folder, uninstall the
HP software for it in Control Panel / Remove Programs and then reboot the PC
to clean up.
Then install the HP software but do this: if it is a downloaded file ending in
.exe right mouse click on that file (if you are using an HP CD for XP look at
it in Windows Explorer and find the file that starts the installation
procedure, probably setup.exe) and select Properties / Compatibility and on
that TAB check the box for Compatibility Mode XP with SP2 and then lower down
on that TAB check Run as Administrator and OK your way out. If the
installation does not start automatically find that same file again, right
mouse click on it and select Run as Administrator on the context menu that
appears and that should start it.
Then follow instructions .....
But preferably come back first and say what version of VISTA you are using and
more about the source of the HP software; also about how the scanner is
connected.