Printer not working!!!!!!!!!!!!!!!!?

I have HP J4580 All in one printer the printer will copy but it won't print, scan or fax , i have somehow pressed a button and knocked it off by not doing these jobs and dont know what i have pressed , i tryed reistalling my cd setup that i got with printer but this has not made a difference , if you had this problem and know how to solve it please type back thanks...