The printer keeps saying power off and restart, but I keep rebooting. Also took the power off and opened a few times or a flash can not open is how back?

Printer old display power off and then restart, the solution is as follows:

1, uninstall the driver, restart the computer, reinstall the driver;

2, check whether there is a problem with the USB interface, replace the USB interface;

3, the system sudden, reinstall the system;

4, the printer main control board is damaged, replace the main control board.