tell us your OS please
if windows,i would try this to start
add remove hardware and run the wizard.
also try unplugging the USb and plugging it in again
and maybe run the install program again too.
I have a HP scanjet 2200c
i managed to scan one document and when i tried scanning the 2nd document, there was a problem. the scanner would not even start, when i checked on my computer under Control Panel, the scanner icon is not even there. it's as if the scanner is not connected to the computer.
i have made sure that the power is on, and that all physical cables are connected.
how do i solve this problem?
please help, and thanks in advance,