iphone not recognized by Windows 7
iPhone 4 no longer recognized by Windows 7, 64-bit desktop. The iTunes diagnostic shows everything working satisfactorily, and Windows Control Panel, under Devices and Printers, shows the "Apple Mobile Device USB Driver". The Properties for that device show the driver as working properly. However, when I plug the iPhone into a USB port (using both a port and cable that formerly worked fine with this iPhone), Windows attempts to install a driver, and fails. The resulting message is "MTP USB Device Device driver software was not successfully installed". Further investigation gives me a message "Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)".
iPhone 4, Windows 7, 64 bit