I'm trying to add a Canon imageCLASS MF7470 printer to my laptop. When I plug it into the USB, Windows 7 detects it, but as unspecified. It says no driver is installed. When I do a Windows update it comes up with other imageCLASS models but not the one I have. I've tried going thru these threads to locate my options but nothing works. When I go to add printer, properties is as far as I can go cause the only tabs I get there are general and hardware. This is a work printer for a jobsite, so of course the disk has been lost at some point, but I need this running ASAP.