Before my HP Photosmart C3100 worked fine with my Imac 27" i was able to print and scan without any issues. But lately after i haven't scanned for a while over the summer i tried scanning again and it always says NO SCANNER selected in the open scanner box from the print & fax panel from the system preferences. It prints fine but whenever i open scanner dialog box it says NO scanner selected? Why is it not recognizing the scanner part of the printer anymore? Any help would be appreciated. I tried uninstalling and installing the printer again didn't work