My computer won't power on. when i press the power button three green lights flash on, and it never powers on. thoughts?

Cycle thru the wash settings. Do all the lights work for the different settings?

Unplug the computer and wait for a few seconds. Plug it in again and press the power button. If this doesn't work, you will need to take it to a service agent as it won't be user repairable.

it sounds like power supply problem

You can remove the top of the printer to remove and clean the pad or reset the printer and continue without cleaning.

These are the instructions which worked for me on my Canon pixma ip470 and has work on many other Canon models:

1) Close the print head cover, and turn off the printer. While pressing the Resume/Cancel button, press the Power button. (Do not release the buttons. The LED lights in green to indicate that a function is selectable.)

2) While holding the Power button, release the Resume/Cancel button. (Do not release the Power button.)

3) While holding the Power button, press the Resume/Cancel button three times, and then release the Power and Resume/Cancel buttons. (Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.) During initialization, the LED blinks in green.

4) When the LED stops blinking and lights in green, press the Resume/Cancel button the 4 times. (Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.)

5) Press the Power button. The LED lights in green, and the
selected function is performed. (When the operation completes, the printer returns to the menu selection mode automatically.)

6) Power off then back on and test.

You should press the button for about three seconds. This is to ensure that you don't turn on the camera by accident (f. ex. in your bag or pocket)

1. Turn off printer
2. Hold down Resume button and press Power button.
3. Keep holding down Power button and let Resume button go.
4. Press Resume button 2 times then let BOTH buttons go.
5. Green lights will flash and then stop blinking.
6. When green lights are solid, press the Resume button 4 times.
7. Press the Power button and the printer should turn off, if not,
press the Power button once more.
8. Your printer should respond as normal..

1. Turn off printer
2. Hold down Resume button and press Power button.
3. Keep holding down Power button and let Resume button go.
4. Press Resume button 2 times then let BOTH buttons go.
5. Green lights will flash and then stop blinking.
6. When green lights are solid, press the Resume button 4 times.
7. Press the Power button and the printer should turn off, if not,
press the Power button once more.
8. Your printer should respond as normal..

knowing printer manufacturers I doubt they even have a sensor to detect that its full at all, they probably based on something crumby like print count. here are some instructions to reset the waste ink tank, the instructions vary so try them until one does the job :
Waste Ink Tank Reset

1: Power off printer
2: Hold Resume button then press and hold POWER, the beeper will sound once.
3: Hold POWER and release RESUME
4: Press RESUME twice, then release all buttons
5: When the indicator lights steady, press RESUME three or four times. The indicator should be orange.
6: Press Power to set data



1. Turn off printer
2. Hold down Resume button and press Power button.
3. Keep holding down Power button and let Resume button go.
4. Press Resume button 2 times then let BOTH buttons go.
5. Green lights will flash and then stop blinking.
6. When green lights are solid, press the Resume button 4 times.
7. Press the Power button and the printer should turn off, if not, press the Power button once more.
8. Your printer should respond as normal.



1. power off Printer
2. Push and hold resume button and push power button
3. Hold Power button and release Resume button
4. Push Resume button twice ( 2x ), and now release resume button and power button
5. Green light will blinking and stop.
6. When green light on, push resume button 4 x
7. Push Power button and printer will off, if that isn't off, push power butto again until print off position.

hy i got a toshiba 42" LCD tv ,when i press the power boton
iget the red light,& it stay that way ontil i pressthe power back off
thanks for any help