You could try System Restore to a date/time before you installed the Logitech web cam, but of course that would uninstall the web cam.
Or, if you still have the printer software setup CD, disconnect the printer with the computer turned off, then start the computer and boot into Windows, uninstall that printer, reboot again and use that CD to reinstall the printer software. Then re-connect the printer.
That might work.
using toshiba p105 laptop and have hp psc3310 all in one printer with wireless router. it is connected to a desktop with usb cable and i am running win xp. dont know when but maybe after installed logitech webcam, cannot scan from the laptop only print function works. help. i get error message that it cannot communicate with the scanner.