1. Turn off the printer 2. After the printer OFF, press and hold the STOP button 3. Press and hold the Power button 4. Release the STOP button ( Don't release the Power button ) 5. Press the STOP button 6 times 6. Release the Power button and stop button simultaneously 7. The display will show black display After you follow all instructions above let's begin to reset this printer, follow the following steps to fix this P07 error warning of the MP287. 1. Download resetter software. You should have Service Tool V3400 resetter software, you can download here for free. 2. Open the file you have downloaded, Service Tool V3400. Canon MP287 Error P07 How to Fix 3. As the image above, these is the screen of the Service Tool V3400, Place a paper on the printer tray, and Click Set button of Clear Ink Counter, the printer will printing a page. 4. Click Set button of Ink Absorber Counter, the printer will blinking a time. 5. Click EEPROM button so the printer will printing again a page 6. Finished, Turn off the printer and turn ON again, the printer will work well. I hope this steps clear, and you will fix error P07 of Canon MP287 printer