Deskjet 720C

XP supposedly has a driver for this printer, but I cannot
get it to install.

Everything was working ok until the Technicians started
helping me with the blue screens. Finally a new hard
drive was installed, but the "serious technical errors
continued". The Techs had me wipe everything and try to
reinstall Winbdows XP Home Edition. (Note: printer was
working prior to that). Could not install XP, finally
contacted a rep in Tenn who ran a diagnostic test on my
computer and found the memory card was bad. Replaced
that; reinstalled all programs, but cannot get the
printer installed. Says data is invalid. Try to
download a driver from Microsoft and am told XP has a
driver installed in the program to run this. Help.