What should I do if the HP Photosmart D110 won't turn on?

First, check that the power cord is firmly connected to both the printer and the power adapter — an LED on the power supply will be lit if the power cord is working. Try turning off the printer, unplugging the power cord, then plugging it back in and pressing the power button only once, as pressing it multiple times may turn the printer back off. If the problem persists after all these steps, contact HP support at www.hp.com/support. (Page 10)