Check to insure your system and hardware meet Microsoft Windows XP system requirements:
* PC with 300 megahertz (MHz) or higher processor recommended (233 MHz minimum required); Intel Pentium/Celeron family, AMD K6/Athlon/Duron family, or compatible processor recommended (check)
* 128 megabytes (MB) of RAM or higher recommended (64 MB minimum supported) (check)
* 300 MB of available hard disk space, plus 50 MB for full color scanning (check)
* Super VGA (800 x 600) or higher resolution video adapter and monitor (check)
* CD-ROM drive (shouldn't matter if using downloaded install file)
* available parallel port with Extended Capabilities (ECP) (ok)
* IEEE-1284 compliant parallel cable (this one is important so don't overlook)
* sound card and Internet access recommended (possible required in your situation)
* Sign in as administrator (you say you have, ok)
* Uninstall previous drivers (you say you have, ok)
Usually with HP printer installations, certain files are installed in the first steps, then a reboot is required before installation can continue. What is happening after the reboot??? Does it not continue the installation automatically as it should?
You may have registry entries from previous installation that's preventing the installation from preceeding normally. I'd suggest you contact HP and advise them of the exact nature of this problem and ask for help with solving the problem.
(Support Contact Page)
http://h20180.www2.hp.com/apps/Conta...17&lc=en&cc=us
Or if your able to edit the registry with confidence, delete all HP OJ700 and/or OJ720 entries, then retry the installation.