Initially, printer would not turn off via power button. Removed power cord from wall socket and plugged it back in, power came on immediately and still would not turn off. Used scheduler to turn it off and now it will not turn on. Connected printer to computer via USB port on front and power light came on, but not enough power for touchscreen. Still would not turn off via power button. When power cord is first plugged into wall after unplugging from socket for times ranging from 15 seconds (as recommended by HP) to several minutes and then plugging into back of printer, power button lights very, very dimly) for several seconds, then flashes and turns off.