Canon S750

Great site, hope I can find some help. My fairly old Canon S750 started acting up by banding and poor print quality. After replacing all the ink I am unable to get it to print at all. The lights were flashing orange 7 times then green once. Attempted resettting ink waste tanks following some instructions I found on this site but now printer flashes orange followed by green 7 times then once green. Any help folks? Thanks

I have error message on my S750 printer alternate green and orange and then a long green and repeats. Have you found out what the problem is or the sequence to reset it? If so I would like to know the problem or the solution. With my printer it will not shut off either.