USB001 serial port missing from 'ports to choose' area of printer install in Win 7. When Cable from printer is introduced to computer usb port, no flag goes up indicating printer is connected. This HP 6P was functional yesterday. Suddenly the USB001 ect ports are gone. What could be the reason?
Computer ports/cable connection function strongly suspect to be ok.
Printer is powered up/ cables have not changed / cpu usb port is okay/windows printer driver update shows device ok