I have Windows 7 Ultimate installed on an HP laptop. It was an upgrade from Vista Home Premium. I have just encountered a problem that I have not seen before. This occurred when printing from one of the map programs (happened with both Google maps and Mapquest). When I print directions and a map, the first or second prints OK. However, when I try and print another set of directions, including the map, I get a message that I need to select a printer. The only printer visible is the Add Printer button. If I reboot the computer, all of the printers reappear. I have not had problems printing from Word 2003, or Excel 2003, or from other Internet Explorer 8 web pages. Has anyone had this problem? Any idea as to the cause and the solution. Thanks.