Lexmark z23 it's installed, I have alll the settings correct, it just won't print. The paper just sits in the printer. It says "can't communicate with the printer." But i'm sure it's all hooked up right. My printer is about 7 years old and quit printing. My computer says it cant locate it. I've tried reinstalling the software and nothing happens. The power light is on, the paper feed button is on, and the transformer makes a buzzing noise that it never made before. Could the transformer be bad and only putting out enough power to light the lights but not enough for my computer to detect it?