There are no fixes for that stuff, that printer is the worst printer ever made.. it does that kind of crap all the time, i even saw a website where a guy dedicated many pages on the printer and it's mutilation cause it sucks so much, everyone has these common problems, it's a very poor printer that's all.
sorry, i don't know of any online pages for help, i just thought i'd rant a bit for a minute cause that POS caused me so many headaches as it did for other people too... can't bid you any help on this matter though. one good thing about HP is their support, try browsing around their site unless you haven't already tried that.