After installing the printer on a network, you turn the computer off and then on, and the printer loses functionality. The printer no longer prints and the printer icon disappears from the Devices and Printers
menu in Windows 7
(64-bit).
HP has released a critical update to resolve a network connectivity issue with the 64-bit Windows 7 HP driver for your printer.
Solution: Download and install a software update
Follow these steps to download and install this update.