unistall , disconnect printer than dowload new driver like to tech said here's a link to new drivers
<A HREF="http://h20015.www2.hp.com/en/softwareCategory.jhtml?lc=en&pagetype=software&prodId=hpdeskjet643393&sw_lang=en&submit.y=6&submit.x=3&cc=us" target="_new">http://h20015.www2.hp.com/en/softwareCategory.jhtml?lc=en&pagetype=software&prodId=hpdeskjet643393&sw_lang=en&submit.y=6&submit.x=3&cc=us</A>