I am trying to scan a document. I have Windows 7 and use Internet Explorer. My printer is a HP Officejet J4680 All-in-One. It is hardwired and I have AT&T Uverse as my Internet service. I keep getting the message that my device is not connected and yet I am able to print & fax but NOT scan. Does anyone know what the problem is? I do not have much knowledge about computers.