Some times my HP printer used to throw a wobbly. I cured it a couple of times by shutting down, undoing lead rebooting, shutting down, putting lead back in and rebooting. Dont ask me why but you know what puters are like ;-)
I have been busy.I have uninstalled the HP/XP drivers,and reinstalled them.The XP driver,prints no text but the pics when printing the "Test" pages.The HP driver prints test pages correctly.I removed Adobe/Office and the results were the same.
I then reinstalled the OS(XP Pro to XP Home)and soon as it had all the hardware drivers installed reran the print tests.The result was exactly the same(no text/just pics,XP driver|text/pics,HP driver)but a .txt document just sets the printer off "going thru the motions" but not actually printing anything.
From the above,I would presume its a driver problem,but I have done ALL I could think of.